CBNA_message_per_month

 +-------+----------+----------+
 | MONTH |    COUNT |    RATIO |
 +-------+----------+----------+
 |     0 |    39013 |   11.98% |
 |     1 |    19111 |    5.87% |
 |     2 |    30640 |    9.41% |
 |     3 |    26530 |    8.15% |
 |     4 |    27987 |     8.6% |
 |     5 |    25307 |    7.77% |
 |     6 |    28020 |    8.61% |
 |     7 |    32898 |    10.1% |
 |     8 |    25780 |    7.92% |
 |     9 |    23915 |    7.34% |
 |    10 |    22464 |     6.9% |
 |    11 |    23748 |    7.29% |
 +-------+----------+----------+