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

   Accident |
 Date-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,072       10.72       10.72
          2 |      1,161       11.61       22.33
          3 |      1,285       12.85       35.18
          4 |      1,408       14.08       49.26
          5 |      1,442       14.42       63.68
          6 |        598        5.98       69.66
          7 |        567        5.67       75.33
          8 |        483        4.83       80.16
          9 |        520        5.20       85.36
         10 |        505        5.05       90.41
         11 |        520        5.20       95.61
         12 |        439        4.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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