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

   Accident |
 Date-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,218       12.18       12.18
          2 |      1,282       12.82       25.00
          3 |      1,286       12.86       37.86
          4 |      1,163       11.63       49.49
          5 |      1,281       12.81       62.30
          6 |        710        7.10       69.40
          7 |        519        5.19       74.59
          8 |        540        5.40       79.99
          9 |        565        5.65       85.64
         10 |        502        5.02       90.66
         11 |        507        5.07       95.73
         12 |        427        4.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016