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

       Last |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,106       41.06       41.06
          1 |        435        4.35       45.41
          2 |        415        4.15       49.56
          3 |        469        4.69       54.25
          4 |        435        4.35       58.60
          5 |        455        4.55       63.15
          6 |        391        3.91       67.06
          7 |        403        4.03       71.09
          8 |        472        4.72       75.81
          9 |        428        4.28       80.09
         10 |        418        4.18       84.27
         11 |        423        4.23       88.50
         12 |        410        4.10       92.60
         99 |        740        7.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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