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

       Most |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,605       16.05       16.05
          2 |        122        1.22       17.27
          3 |         70        0.70       17.97
          5 |         77        0.77       18.74
          6 |          4        0.04       18.78
          7 |          3        0.03       18.81
          8 |      1,133       11.33       30.14
          9 |        136        1.36       31.50
         10 |         51        0.51       32.01
         11 |          7        0.07       32.08
         12 |      5,161       51.61       83.69
         13 |         73        0.73       84.42
         14 |        186        1.86       86.28
         15 |         20        0.20       86.48
         16 |         14        0.14       86.62
         18 |         31        0.31       86.93
         19 |         70        0.70       87.63
         20 |         73        0.73       88.36
         21 |         22        0.22       88.58
         22 |        133        1.33       89.91
         23 |         37        0.37       90.28
         24 |         86        0.86       91.14
         25 |         65        0.65       91.79
         26 |         25        0.25       92.04
         27 |        388        3.88       95.92
         28 |        227        2.27       98.19
         29 |         23        0.23       98.42
         31 |         73        0.73       99.15
         32 |         34        0.34       99.49
         33 |         46        0.46       99.95
         99 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016