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

       LAST |
ACCIDENT-MO |
        NTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,467       54.67       54.67
          1 |        351        3.51       58.18
          2 |        294        2.94       61.12
          3 |        320        3.20       64.32
          4 |        316        3.16       67.48
          5 |        320        3.20       70.68
          6 |        347        3.47       74.15
          7 |        338        3.38       77.53
          8 |        343        3.43       80.96
          9 |        329        3.29       84.25
         10 |        363        3.63       87.88
         11 |        311        3.11       90.99
         12 |        351        3.51       94.50
         99 |        469        4.69       99.19
          . |         81        0.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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