| 
            
         | 
            
                Number of notes per month
    
        | Month | 
        Notes | 
        5 | 
        10 | 
        20 | 
        50 | 
        100 | 
        200 | 
        500 | 
     
        
            | 2017-08 | 
            870 (0.52%) | 
                    29 | 
                    415 | 
                    423 | 
                    2 | 
                     | 
                     | 
                    1 | 
         
        
            | 2017-07 | 
            1077 (0.64%) | 
                    40 | 
                    429 | 
                    593 | 
                    9 | 
                    4 | 
                    1 | 
                    1 | 
         
        
            | 2017-06 | 
            763 (0.45%) | 
                    21 | 
                    322 | 
                    406 | 
                    11 | 
                    2 | 
                     | 
                    1 | 
         
        
            | 2017-05 | 
            719 (0.43%) | 
                    61 | 
                    304 | 
                    350 | 
                    2 | 
                     | 
                    1 | 
                    1 | 
         
        
            | 2017-04 | 
            1131 (0.67%) | 
                    42 | 
                    492 | 
                    585 | 
                    9 | 
                    1 | 
                    1 | 
                    1 | 
         
        
            | 2017-03 | 
            1933 (1.15%) | 
                    53 | 
                    885 | 
                    958 | 
                    32 | 
                    2 | 
                    1 | 
                    2 | 
         
        
            | 2017-02 | 
            1607 (0.96%) | 
                    270 | 
                    589 | 
                    655 | 
                    86 | 
                    3 | 
                    3 | 
                    1 | 
         
        
            | 2017-01 | 
            1860 (1.11%) | 
                    371 | 
                    835 | 
                    646 | 
                    5 | 
                     | 
                    1 | 
                    2 | 
         
        
            | 2016-12 | 
            1753 (1.04%) | 
                    83 | 
                    669 | 
                    984 | 
                    13 | 
                    1 | 
                    1 | 
                    2 | 
         
        
            | 2016-11 | 
            1564 (0.93%) | 
                    71 | 
                    636 | 
                    819 | 
                    31 | 
                    4 | 
                    1 | 
                    2 | 
         
        
            | 2016-10 | 
            1565 (0.93%) | 
                    61 | 
                    794 | 
                    687 | 
                    19 | 
                    3 | 
                     | 
                    1 | 
         
        
            | 2016-09 | 
            1564 (0.93%) | 
                    51 | 
                    678 | 
                    822 | 
                    9 | 
                    2 | 
                     | 
                    2 | 
         
        
            | 2016-08 | 
            2002 (1.19%) | 
                    71 | 
                    1070 | 
                    840 | 
                    12 | 
                    6 | 
                    1 | 
                    2 | 
         
        
            | 2016-07 | 
            1187 (0.71%) | 
                    56 | 
                    507 | 
                    608 | 
                    14 | 
                    1 | 
                     | 
                    1 | 
         
        
            | 2016-06 | 
            1800 (1.07%) | 
                    38 | 
                    646 | 
                    1049 | 
                    29 | 
                    30 | 
                    6 | 
                    2 | 
         
        
            | 2016-05 | 
            1388 (0.82%) | 
                    29 | 
                    510 | 
                    819 | 
                    28 | 
                     | 
                    1 | 
                    1 | 
         
        
            | 2016-04 | 
            1505 (0.89%) | 
                    80 | 
                    604 | 
                    788 | 
                    28 | 
                    1 | 
                    1 | 
                    3 | 
         
        
            | 2016-03 | 
            1664 (0.99%) | 
                    65 | 
                    642 | 
                    944 | 
                    11 | 
                    1 | 
                     | 
                    1 | 
         
        
            | 2016-02 | 
            1464 (0.87%) | 
                    161 | 
                    632 | 
                    645 | 
                    17 | 
                    7 | 
                     | 
                    2 | 
         
        
            | 2016-01 | 
            1565 (0.93%) | 
                    511 | 
                    601 | 
                    445 | 
                    1 | 
                    6 | 
                     | 
                    1 | 
         
        
            | 2015-12 | 
            1354 (0.80%) | 
                    75 | 
                    569 | 
                    706 | 
                    2 | 
                     | 
                     | 
                    2 | 
         
        
            | 2015-11 | 
            1318 (0.78%) | 
                    49 | 
                    634 | 
                    629 | 
                    5 | 
                     | 
                     | 
                    1 | 
         
        
            | 2015-10 | 
            1340 (0.80%) | 
                    45 | 
                    479 | 
                    778 | 
                    3 | 
                    32 | 
                    2 | 
                    1 | 
         
        
            | 2015-09 | 
            1255 (0.75%) | 
                    56 | 
                    484 | 
                    707 | 
                    6 | 
                    1 | 
                     | 
                    1 | 
         
        
            | 2015-08 | 
            1305 (0.78%) | 
                    31 | 
                    583 | 
                    679 | 
                    9 | 
                    1 | 
                     | 
                    2 | 
         
        
            | 2015-07 | 
            1403 (0.83%) | 
                    40 | 
                    620 | 
                    729 | 
                    13 | 
                     | 
                     | 
                    1 | 
         
        
            | 2015-06 | 
            1304 (0.77%) | 
                    17 | 
                    598 | 
                    674 | 
                    14 | 
                     | 
                     | 
                    1 | 
         
        
            | 2015-05 | 
            1305 (0.78%) | 
                    58 | 
                    505 | 
                    723 | 
                    13 | 
                    4 | 
                     | 
                    2 | 
         
        
            | 2015-04 | 
            1304 (0.77%) | 
                    81 | 
                    695 | 
                    523 | 
                    4 | 
                     | 
                     | 
                    1 | 
         
        
            | 2015-03 | 
            1305 (0.78%) | 
                    45 | 
                    535 | 
                    719 | 
                    4 | 
                    1 | 
                     | 
                    1 | 
         
        
            | 2015-02 | 
            1204 (0.72%) | 
                    193 | 
                    480 | 
                    514 | 
                    8 | 
                    7 | 
                     | 
                    2 | 
         
        
            | 2015-01 | 
            1354 (0.80%) | 
                    373 | 
                    501 | 
                    477 | 
                    2 | 
                     | 
                     | 
                    1 | 
         
        
            | 2014-12 | 
            1403 (0.83%) | 
                    42 | 
                    709 | 
                    645 | 
                    6 | 
                     | 
                     | 
                    1 | 
         
        
            | 2014-11 | 
            1206 (0.72%) | 
                    97 | 
                    550 | 
                    553 | 
                    4 | 
                     | 
                     | 
                    2 | 
         
        
            | 2014-10 | 
            1417 (0.84%) | 
                    10 | 
                    712 | 
                    693 | 
                     | 
                    1 | 
                     | 
                    1 | 
         
        
            | 2014-09 | 
            1431 (0.85%) | 
                    24 | 
                    783 | 
                    612 | 
                    10 | 
                    1 | 
                     | 
                    1 | 
         
        
            | 2014-08 | 
            1783 (1.06%) | 
                    56 | 
                    808 | 
                    887 | 
                    23 | 
                    4 | 
                    1 | 
                    4 | 
         
        
            | 2014-07 | 
            1762 (1.05%) | 
                    59 | 
                    776 | 
                    804 | 
                    104 | 
                    17 | 
                     | 
                    2 | 
         
        
            | 2014-06 | 
            860 (0.51%) | 
                    51 | 
                    336 | 
                    466 | 
                    6 | 
                     | 
                     | 
                    1 | 
         
        
            | 2014-05 | 
            992 (0.59%) | 
                    54 | 
                    329 | 
                    499 | 
                    29 | 
                    76 | 
                    4 | 
                    1 | 
         
        
            | 2014-04 | 
            1152 (0.68%) | 
                    61 | 
                    458 | 
                    624 | 
                    3 | 
                    5 | 
                     | 
                    1 | 
         
        
            | 2014-03 | 
            1241 (0.74%) | 
                    17 | 
                    463 | 
                    733 | 
                    27 | 
                     | 
                     | 
                    1 | 
         
        
            | 2014-02 | 
            1107 (0.66%) | 
                    46 | 
                    411 | 
                    630 | 
                    16 | 
                    3 | 
                     | 
                    1 | 
         
        
            | 2014-01 | 
            1331 (0.79%) | 
                    65 | 
                    517 | 
                    735 | 
                    11 | 
                    1 | 
                     | 
                    2 | 
         
        
            | 2013-12 | 
            1770 (1.05%) | 
                    92 | 
                    928 | 
                    739 | 
                    9 | 
                    1 | 
                     | 
                    1 | 
         
        
            | 2013-11 | 
            1041 (0.62%) | 
                    19 | 
                    555 | 
                    453 | 
                    3 | 
                    9 | 
                    1 | 
                    1 | 
         
        
            | 2013-10 | 
            1729 (1.03%) | 
                    571 | 
                    594 | 
                    473 | 
                    80 | 
                    7 | 
                    2 | 
                    2 | 
         
        
            | 2013-09 | 
            1303 (0.77%) | 
                    22 | 
                    678 | 
                    585 | 
                    16 | 
                    1 | 
                     | 
                    1 | 
         
        
            | 2013-08 | 
            2579 (1.53%) | 
                    118 | 
                    1306 | 
                    1145 | 
                    7 | 
                     | 
                     | 
                    3 | 
         
        
            | 2013-07 | 
            3119 (1.85%) | 
                    83 | 
                    1570 | 
                    1455 | 
                    7 | 
                    1 | 
                     | 
                    3 | 
         
        
            | 2013-06 | 
            1995 (1.19%) | 
                    19 | 
                    979 | 
                    990 | 
                    2 | 
                    2 | 
                    1 | 
                    2 | 
         
        
            | 2013-05 | 
            2283 (1.36%) | 
                    80 | 
                    1218 | 
                    982 | 
                    1 | 
                     | 
                     | 
                    2 | 
         
        
            | 2013-04 | 
            2056 (1.22%) | 
                    55 | 
                    1113 | 
                    878 | 
                    7 | 
                     | 
                     | 
                    3 | 
         
        
            | 2013-03 | 
            2070 (1.23%) | 
                    50 | 
                    949 | 
                    1057 | 
                    9 | 
                    1 | 
                    2 | 
                    2 | 
         
        
            | 2013-02 | 
            1991 (1.18%) | 
                    21 | 
                    1122 | 
                    841 | 
                    5 | 
                     | 
                     | 
                    2 | 
         
        
            | 2013-01 | 
            2353 (1.40%) | 
                    60 | 
                    1119 | 
                    1161 | 
                    9 | 
                    2 | 
                     | 
                    2 | 
         
        
            | 2012-12 | 
            1625 (0.97%) | 
                    52 | 
                    754 | 
                    816 | 
                     | 
                    1 | 
                     | 
                    2 | 
         
        
            | 2012-11 | 
            2000 (1.19%) | 
                    67 | 
                    935 | 
                    935 | 
                    40 | 
                    21 | 
                     | 
                    2 | 
         
        
            | 2012-10 | 
            1976 (1.17%) | 
                    74 | 
                    939 | 
                    949 | 
                    12 | 
                     | 
                     | 
                    2 | 
         
        
            | 2012-09 | 
            1185 (0.70%) | 
                    50 | 
                    604 | 
                    521 | 
                    8 | 
                    1 | 
                     | 
                    1 | 
         
        
            | 2012-08 | 
            2314 (1.38%) | 
                    514 | 
                    937 | 
                    853 | 
                    8 | 
                     | 
                     | 
                    2 | 
         
        
            | 2012-07 | 
            2648 (1.57%) | 
                    188 | 
                    1372 | 
                    1019 | 
                    47 | 
                    16 | 
                    3 | 
                    3 | 
         
        
            | 2012-06 | 
            2600 (1.55%) | 
                    60 | 
                    1121 | 
                    1086 | 
                    331 | 
                     | 
                     | 
                    2 | 
         
        
            | 2012-05 | 
            2194 (1.30%) | 
                    138 | 
                    1095 | 
                    864 | 
                    95 | 
                     | 
                     | 
                    2 | 
         
        
            | 2012-04 | 
            3207 (1.91%) | 
                    133 | 
                    1461 | 
                    1452 | 
                    155 | 
                    2 | 
                     | 
                    4 | 
         
        
            | 2012-03 | 
            726 (0.43%) | 
                    7 | 
                    399 | 
                    317 | 
                    3 | 
                     | 
                     | 
                     | 
         
        
            | 2012-02 | 
            1407 (0.84%) | 
                    87 | 
                    668 | 
                    640 | 
                    10 | 
                     | 
                     | 
                    2 | 
         
        
            | 2012-01 | 
            2404 (1.43%) | 
                    65 | 
                    1230 | 
                    1014 | 
                    88 | 
                    3 | 
                    2 | 
                    2 | 
         
        
            | 2011-12 | 
            2683 (1.59%) | 
                    97 | 
                    1421 | 
                    1060 | 
                    96 | 
                    6 | 
                     | 
                    3 | 
         
        
            | 2011-11 | 
            1358 (0.81%) | 
                    43 | 
                    647 | 
                    647 | 
                    20 | 
                     | 
                     | 
                    1 | 
         
        
            | 2011-10 | 
            1317 (0.78%) | 
                    57 | 
                    604 | 
                    646 | 
                    5 | 
                    1 | 
                    2 | 
                    2 | 
         
        
            | 2011-09 | 
            2554 (1.52%) | 
                    95 | 
                    1360 | 
                    1073 | 
                    13 | 
                    4 | 
                    6 | 
                    3 | 
         
        
            | 2011-08 | 
            1110 (0.66%) | 
                    100 | 
                    515 | 
                    482 | 
                    10 | 
                    2 | 
                     | 
                    1 | 
         
        
            | 2011-07 | 
            2166 (1.29%) | 
                    122 | 
                    1047 | 
                    969 | 
                    18 | 
                    4 | 
                    4 | 
                    2 | 
         
        
            | 2011-06 | 
            2439 (1.45%) | 
                    98 | 
                    1194 | 
                    1122 | 
                    21 | 
                    1 | 
                     | 
                    3 | 
         
        
            | 2011-05 | 
            620 (0.37%) | 
                    33 | 
                    325 | 
                    258 | 
                    4 | 
                     | 
                     | 
                     | 
         
        
            | 2011-04 | 
            1773 (1.05%) | 
                    62 | 
                    894 | 
                    790 | 
                    23 | 
                    1 | 
                    1 | 
                    2 | 
         
        
            | 2011-03 | 
            2019 (1.20%) | 
                    58 | 
                    909 | 
                    916 | 
                    125 | 
                    9 | 
                     | 
                    2 | 
         
        
            | 2011-02 | 
            1967 (1.17%) | 
                    54 | 
                    1012 | 
                    899 | 
                     | 
                     | 
                     | 
                    2 | 
         
        
            | 2011-01 | 
            2452 (1.46%) | 
                    98 | 
                    1163 | 
                    1154 | 
                    32 | 
                    1 | 
                    1 | 
                    3 | 
         
        
            | 2010-12 | 
            2626 (1.56%) | 
                    96 | 
                    1309 | 
                    1148 | 
                    71 | 
                     | 
                     | 
                    2 | 
         
        
            | 2010-11 | 
            1787 (1.06%) | 
                    81 | 
                    991 | 
                    696 | 
                    17 | 
                     | 
                     | 
                    2 | 
         
        
            | 2010-10 | 
            1979 (1.18%) | 
                    190 | 
                    940 | 
                    825 | 
                    17 | 
                    4 | 
                    1 | 
                    2 | 
         
        
            | 2010-09 | 
            2375 (1.41%) | 
                    246 | 
                    1083 | 
                    1029 | 
                    11 | 
                    4 | 
                     | 
                    2 | 
         
        
            | 2010-08 | 
            2056 (1.22%) | 
                    434 | 
                    934 | 
                    658 | 
                    24 | 
                    3 | 
                     | 
                    3 | 
         
        
            | 2010-07 | 
            1905 (1.13%) | 
                    23 | 
                    951 | 
                    880 | 
                    45 | 
                    4 | 
                    1 | 
                    1 | 
         
        
            | 2010-06 | 
            1638 (0.97%) | 
                    72 | 
                    828 | 
                    718 | 
                    10 | 
                    8 | 
                     | 
                    2 | 
         
        
            | 2010-05 | 
            2081 (1.24%) | 
                    84 | 
                    1109 | 
                    862 | 
                    23 | 
                     | 
                     | 
                    3 | 
         
        
            | 2010-04 | 
            1506 (0.89%) | 
                    73 | 
                    629 | 
                    732 | 
                    46 | 
                    21 | 
                    2 | 
                    3 | 
         
        
            | 2010-03 | 
            1864 (1.11%) | 
                    86 | 
                    881 | 
                    855 | 
                    30 | 
                    10 | 
                     | 
                    2 | 
         
        
            | 2010-02 | 
            1419 (0.84%) | 
                    76 | 
                    631 | 
                    678 | 
                    28 | 
                    4 | 
                     | 
                    2 | 
         
        
            | 2010-01 | 
            1155 (0.69%) | 
                    46 | 
                    396 | 
                    700 | 
                    9 | 
                    3 | 
                     | 
                    1 | 
         
        
            | 2009-12 | 
            1831 (1.09%) | 
                    73 | 
                    814 | 
                    914 | 
                    24 | 
                    2 | 
                    2 | 
                    2 | 
         
        
            | 2009-11 | 
            1598 (0.95%) | 
                    43 | 
                    742 | 
                    661 | 
                    99 | 
                    29 | 
                    23 | 
                    1 | 
         
        
            | 2009-10 | 
            2090 (1.24%) | 
                    245 | 
                    939 | 
                    878 | 
                    21 | 
                    4 | 
                     | 
                    3 | 
         
        
            | 2009-09 | 
            1273 (0.76%) | 
                    261 | 
                    490 | 
                    493 | 
                    27 | 
                    1 | 
                     | 
                    1 | 
         
        
            | 2009-08 | 
            1561 (0.93%) | 
                    62 | 
                    700 | 
                    730 | 
                    66 | 
                    2 | 
                     | 
                    1 | 
         
        
            | 2009-07 | 
            1132 (0.67%) | 
                    75 | 
                    424 | 
                    615 | 
                    15 | 
                    1 | 
                     | 
                    2 | 
         
        
            | 2009-06 | 
            820 (0.49%) | 
                    55 | 
                    198 | 
                    553 | 
                    14 | 
                     | 
                     | 
                     | 
         
        
            | 2009-05 | 
            1081 (0.64%) | 
                    29 | 
                    335 | 
                    626 | 
                    64 | 
                    20 | 
                    6 | 
                    1 | 
         
        
            | 2009-04 | 
            702 (0.42%) | 
                    54 | 
                    165 | 
                    426 | 
                    45 | 
                    9 | 
                     | 
                    3 | 
         
        
            | 2009-03 | 
            1048 (0.62%) | 
                    54 | 
                    444 | 
                    526 | 
                    13 | 
                    1 | 
                     | 
                    10 | 
         
        
            | 2009-02 | 
            376 (0.22%) | 
                    38 | 
                    144 | 
                    188 | 
                    6 | 
                     | 
                     | 
                     | 
         
        
            | 2009-01 | 
            385 (0.23%) | 
                    50 | 
                    115 | 
                    197 | 
                    22 | 
                    1 | 
                     | 
                     | 
         
        
            | 2008-12 | 
            246 (0.15%) | 
                    21 | 
                    66 | 
                    139 | 
                    18 | 
                    2 | 
                     | 
                     | 
         
        
            | 2008-11 | 
            171 (0.10%) | 
                    27 | 
                    63 | 
                    80 | 
                    1 | 
                     | 
                     | 
                     | 
         
        
            | 2008-10 | 
            115 (0.07%) | 
                    11 | 
                    24 | 
                    62 | 
                    16 | 
                    1 | 
                    1 | 
                     | 
         
 
             
         |