Frequencies for first 10,000 rows of month variable in person dataset :

   Accident |
 Date-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,183       11.83       11.83
          2 |      1,042       10.42       22.25
          3 |      1,355       13.55       35.80
          4 |      1,282       12.82       48.62
          5 |      1,314       13.14       61.76
          6 |      1,072       10.72       72.48
          7 |        502        5.02       77.50
          8 |        512        5.12       82.62
          9 |        413        4.13       86.75
         10 |        456        4.56       91.31
         11 |        415        4.15       95.46
         12 |        454        4.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016