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

       MOST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,566       15.66       15.66
          2 |        140        1.40       17.06
          3 |         60        0.60       17.66
          5 |         26        0.26       17.92
          6 |          2        0.02       17.94
          7 |          9        0.09       18.03
          8 |      1,026       10.26       28.29
          9 |        168        1.68       29.97
         10 |         27        0.27       30.24
         11 |          9        0.09       30.33
         12 |      5,297       52.97       83.30
         13 |         70        0.70       84.00
         14 |        104        1.04       85.04
         15 |         26        0.26       85.30
         16 |          8        0.08       85.38
         17 |         17        0.17       85.55
         18 |         31        0.31       85.86
         19 |         21        0.21       86.07
         21 |         17        0.17       86.24
         23 |         11        0.11       86.35
         24 |         58        0.58       86.93
         25 |         34        0.34       87.27
         27 |         15        0.15       87.42
         29 |         38        0.38       87.80
         30 |        114        1.14       88.94
         31 |         15        0.15       89.09
         32 |         16        0.16       89.25
         33 |         28        0.28       89.53
         34 |         27        0.27       89.80
         35 |         58        0.58       90.38
         36 |          9        0.09       90.47
         37 |          8        0.08       90.55
         38 |         36        0.36       90.91
         39 |         32        0.32       91.23
         40 |          2        0.02       91.25
         41 |          1        0.01       91.26
         42 |        589        5.89       97.15
         43 |         41        0.41       97.56
         44 |          1        0.01       97.57
         45 |          4        0.04       97.61
         46 |         22        0.22       97.83
         47 |         11        0.11       97.94
         48 |          1        0.01       97.95
         49 |          1        0.01       97.96
         50 |          1        0.01       97.97
         52 |          9        0.09       98.06
         53 |          3        0.03       98.09
         54 |        148        1.48       99.57
         60 |          4        0.04       99.61
         99 |         39        0.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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