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

       MOST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,598       15.98       15.98
          2 |         79        0.79       16.77
          3 |         39        0.39       17.16
          5 |         36        0.36       17.52
          6 |          2        0.02       17.54
          7 |         20        0.20       17.74
          8 |        996        9.96       27.70
          9 |        148        1.48       29.18
         10 |         33        0.33       29.51
         11 |          7        0.07       29.58
         12 |      5,383       53.83       83.41
         13 |        129        1.29       84.70
         14 |         96        0.96       85.66
         15 |         25        0.25       85.91
         16 |         10        0.10       86.01
         17 |         25        0.25       86.26
         18 |         12        0.12       86.38
         19 |         18        0.18       86.56
         20 |          1        0.01       86.57
         21 |         22        0.22       86.79
         22 |          2        0.02       86.81
         23 |         11        0.11       86.92
         24 |         82        0.82       87.74
         25 |         53        0.53       88.27
         26 |          3        0.03       88.30
         27 |         38        0.38       88.68
         28 |          5        0.05       88.73
         29 |         55        0.55       89.28
         30 |        114        1.14       90.42
         31 |         12        0.12       90.54
         32 |         25        0.25       90.79
         33 |         33        0.33       91.12
         34 |         27        0.27       91.39
         35 |         41        0.41       91.80
         36 |         20        0.20       92.00
         37 |         13        0.13       92.13
         38 |         40        0.40       92.53
         39 |         40        0.40       92.93
         40 |          3        0.03       92.96
         41 |          5        0.05       93.01
         42 |        580        5.80       98.81
         43 |         51        0.51       99.32
         45 |          8        0.08       99.40
         46 |         26        0.26       99.66
         47 |         12        0.12       99.78
         48 |          1        0.01       99.79
         99 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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