Frequencies for first 10,000 rows of harm_ev variable in accident dataset :

      FIRST |
    HARMFUL |
      EVENT |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,043       10.43       10.43
          2 |          5        0.05       10.48
          3 |         12        0.12       10.60
          4 |          1        0.01       10.61
          5 |         73        0.73       11.34
          7 |         15        0.15       11.49
          8 |      1,700       17.00       28.49
          9 |        286        2.86       31.35
         10 |         56        0.56       31.91
         11 |         25        0.25       32.16
         12 |      3,734       37.34       69.50
         13 |        179        1.79       71.29
         14 |        138        1.38       72.67
         15 |         25        0.25       72.92
         16 |          5        0.05       72.97
         17 |         32        0.32       73.29
         18 |         35        0.35       73.64
         19 |          8        0.08       73.72
         20 |          8        0.08       73.80
         21 |         34        0.34       74.14
         22 |          5        0.05       74.19
         23 |         43        0.43       74.62
         24 |        233        2.33       76.95
         25 |         68        0.68       77.63
         26 |          1        0.01       77.64
         27 |        108        1.08       78.72
         28 |          2        0.02       78.74
         29 |         22        0.22       78.96
         30 |        201        2.01       80.97
         31 |        105        1.05       82.02
         32 |        104        1.04       83.06
         33 |        393        3.93       86.99
         34 |        136        1.36       88.35
         35 |        114        1.14       89.49
         36 |         30        0.30       89.79
         37 |         85        0.85       90.64
         38 |        128        1.28       91.92
         39 |         27        0.27       92.19
         40 |          7        0.07       92.26
         41 |         32        0.32       92.58
         42 |        568        5.68       98.26
         43 |        126        1.26       99.52
         44 |          2        0.02       99.54
         45 |          7        0.07       99.61
         46 |         11        0.11       99.72
         99 |         28        0.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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