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

       Last |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,959       39.59       39.59
          1 |        440        4.40       43.99
          2 |        423        4.23       48.22
          3 |        485        4.85       53.07
          4 |        445        4.45       57.52
          5 |        459        4.59       62.11
          6 |        473        4.73       66.84
          7 |        436        4.36       71.20
          8 |        442        4.42       75.62
          9 |        449        4.49       80.11
         10 |        434        4.34       84.45
         11 |        417        4.17       88.62
         12 |        392        3.92       92.54
         99 |        746        7.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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