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

       Last |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,076       40.76       40.76
          1 |        416        4.16       44.92
          2 |        393        3.93       48.85
          3 |        404        4.04       52.89
          4 |        472        4.72       57.61
          5 |        468        4.68       62.29
          6 |        485        4.85       67.14
          7 |        425        4.25       71.39
          8 |        410        4.10       75.49
          9 |        457        4.57       80.06
         10 |        427        4.27       84.33
         11 |        458        4.58       88.91
         12 |        425        4.25       93.16
         99 |        684        6.84      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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