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

       Most |
    Harmful |
      Event |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,664       16.64       16.64
          2 |        125        1.25       17.89
          3 |         34        0.34       18.23
          5 |         37        0.37       18.60
          6 |          3        0.03       18.63
          7 |         15        0.15       18.78
          8 |      1,243       12.43       31.21
          9 |        167        1.67       32.88
         10 |         52        0.52       33.40
         11 |          8        0.08       33.48
         12 |      5,095       50.95       84.43
         13 |        168        1.68       86.11
         14 |        133        1.33       87.44
         15 |         18        0.18       87.62
         16 |          3        0.03       87.65
         17 |         26        0.26       87.91
         18 |         18        0.18       88.09
         19 |         31        0.31       88.40
         21 |         30        0.30       88.70
         22 |          6        0.06       88.76
         23 |         27        0.27       89.03
         24 |         63        0.63       89.66
         25 |         28        0.28       89.94
         26 |          9        0.09       90.03
         27 |         15        0.15       90.18
         28 |          1        0.01       90.19
         29 |         55        0.55       90.74
         30 |        185        1.85       92.59
         31 |         40        0.40       92.99
         32 |         22        0.22       93.21
         33 |         29        0.29       93.50
         34 |         39        0.39       93.89
         35 |         42        0.42       94.31
         36 |          9        0.09       94.40
         37 |         14        0.14       94.54
         38 |         28        0.28       94.82
         39 |         34        0.34       95.16
         40 |          9        0.09       95.25
         41 |          4        0.04       95.29
         42 |        429        4.29       99.58
         43 |         35        0.35       99.93
         99 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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