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

   Accident |
 Date-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,270       12.70       12.70
          2 |      1,250       12.50       25.20
          3 |      1,260       12.60       37.80
          4 |      1,450       14.50       52.30
          5 |      1,009       10.09       62.39
          6 |        514        5.14       67.53
          7 |        624        6.24       73.77
          8 |        529        5.29       79.06
          9 |        515        5.15       84.21
         10 |        544        5.44       89.65
         11 |        548        5.48       95.13
         12 |        487        4.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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