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

       Most |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,463       14.63       14.63
          2 |        111        1.11       15.74
          3 |         52        0.52       16.26
          5 |         52        0.52       16.78
          6 |          3        0.03       16.81
          7 |          1        0.01       16.82
          8 |      1,274       12.74       29.56
          9 |        197        1.97       31.53
         10 |         23        0.23       31.76
         11 |         13        0.13       31.89
         12 |      5,097       50.97       82.86
         14 |         88        0.88       83.74
         15 |         50        0.50       84.24
         16 |          2        0.02       84.26
         17 |          8        0.08       84.34
         18 |         26        0.26       84.60
         19 |         18        0.18       84.78
         20 |          3        0.03       84.81
         21 |         19        0.19       85.00
         23 |         16        0.16       85.16
         24 |         93        0.93       86.09
         25 |         48        0.48       86.57
         26 |          2        0.02       86.59
         30 |        200        2.00       88.59
         31 |         18        0.18       88.77
         32 |         31        0.31       89.08
         33 |         30        0.30       89.38
         34 |         33        0.33       89.71
         35 |         59        0.59       90.30
         38 |         46        0.46       90.76
         39 |         57        0.57       91.33
         40 |          3        0.03       91.36
         41 |          2        0.02       91.38
         42 |        590        5.90       97.28
         43 |         30        0.30       97.58
         44 |          1        0.01       97.59
         45 |          2        0.02       97.61
         46 |         16        0.16       97.77
         49 |          1        0.01       97.78
         50 |          2        0.02       97.80
         52 |          8        0.08       97.88
         53 |          6        0.06       97.94
         54 |        127        1.27       99.21
         57 |          1        0.01       99.22
         58 |         14        0.14       99.36
         59 |         22        0.22       99.58
         99 |         42        0.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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