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

    persons |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,126       21.26       21.26
          2 |      3,457       34.57       55.83
          3 |      1,957       19.57       75.40
          4 |      1,053       10.53       85.93
          5 |        622        6.22       92.15
          6 |        330        3.30       95.45
          7 |        180        1.80       97.25
          8 |        103        1.03       98.28
          9 |         61        0.61       98.89
         10 |         33        0.33       99.22
         11 |         15        0.15       99.37
         12 |         17        0.17       99.54
         13 |          7        0.07       99.61
         14 |          9        0.09       99.70
         15 |          6        0.06       99.76
         16 |          5        0.05       99.81
         17 |          4        0.04       99.85
         18 |          3        0.03       99.88
         19 |          2        0.02       99.90
         20 |          1        0.01       99.91
         21 |          2        0.02       99.93
         27 |          2        0.02       99.95
         28 |          1        0.01       99.96
         33 |          1        0.01       99.97
         45 |          1        0.01       99.98
         49 |          1        0.01       99.99
         60 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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