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

       MOST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,569       15.69       15.69
          2 |        116        1.16       16.85
          3 |         48        0.48       17.33
          5 |         37        0.37       17.70
          6 |          1        0.01       17.71
          7 |         12        0.12       17.83
          8 |      1,236       12.36       30.19
          9 |        171        1.71       31.90
         10 |         50        0.50       32.40
         11 |         11        0.11       32.51
         12 |      5,217       52.17       84.68
         13 |        146        1.46       86.14
         14 |         91        0.91       87.05
         15 |         18        0.18       87.23
         16 |          3        0.03       87.26
         17 |         19        0.19       87.45
         18 |         18        0.18       87.63
         19 |         27        0.27       87.90
         21 |         20        0.20       88.10
         22 |         14        0.14       88.24
         23 |         22        0.22       88.46
         24 |         73        0.73       89.19
         25 |         34        0.34       89.53
         26 |          4        0.04       89.57
         27 |         23        0.23       89.80
         28 |          2        0.02       89.82
         29 |         47        0.47       90.29
         30 |        181        1.81       92.10
         31 |         41        0.41       92.51
         32 |         30        0.30       92.81
         33 |         15        0.15       92.96
         34 |         42        0.42       93.38
         35 |         45        0.45       93.83
         36 |         11        0.11       93.94
         37 |         19        0.19       94.13
         38 |         42        0.42       94.55
         39 |         48        0.48       95.03
         40 |          2        0.02       95.05
         41 |          6        0.06       95.11
         42 |        449        4.49       99.60
         43 |         37        0.37       99.97
         99 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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