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

   Accident |
 Date-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        811        8.11        8.11
          2 |        775        7.75       15.86
          3 |        873        8.73       24.59
          4 |        898        8.98       33.57
          5 |        873        8.73       42.30
          6 |        836        8.36       50.66
          7 |        825        8.25       58.91
          8 |        859        8.59       67.50
          9 |        841        8.41       75.91
         10 |        850        8.50       84.41
         11 |        755        7.55       91.96
         12 |        804        8.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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