Frequencies for first 10,000 rows of last_mo variable in vehicle dataset :

       Last |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,233       42.33       42.33
          1 |        429        4.29       46.62
          2 |        416        4.16       50.78
          3 |        428        4.28       55.06
          4 |        430        4.30       59.36
          5 |        467        4.67       64.03
          6 |        454        4.54       68.57
          7 |        422        4.22       72.79
          8 |        423        4.23       77.02
          9 |        408        4.08       81.10
         10 |        429        4.29       85.39
         11 |        362        3.62       89.01
         12 |        424        4.24       93.25
         99 |        675        6.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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