Frequencies for first 10,000 rows of impact1 variable in vehicle dataset :

    INITIAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        471        4.71        4.71
          1 |        383        3.83        8.54
          2 |        137        1.37        9.91
          3 |        508        5.08       14.99
          4 |        101        1.01       16.00
          5 |         96        0.96       16.96
          6 |        547        5.47       22.43
          7 |        110        1.10       23.53
          8 |        111        1.11       24.64
          9 |        571        5.71       30.35
         10 |        175        1.75       32.10
         11 |        534        5.34       37.44
         12 |      5,270       52.70       90.14
         13 |         59        0.59       90.73
         14 |        467        4.67       95.40
         18 |         52        0.52       95.92
         99 |        408        4.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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