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

    INITIAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        571        5.71        5.71
          1 |        404        4.04        9.75
          2 |        111        1.11       10.86
          3 |        503        5.03       15.89
          4 |         78        0.78       16.67
          5 |         98        0.98       17.65
          6 |        611        6.11       23.76
          7 |        138        1.38       25.14
          8 |         74        0.74       25.88
          9 |        662        6.62       32.50
         10 |        157        1.57       34.07
         11 |        486        4.86       38.93
         12 |      5,104       51.04       89.97
         13 |         57        0.57       90.54
         14 |        429        4.29       94.83
         18 |         41        0.41       95.24
         99 |        476        4.76      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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