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

    persons |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,034       20.34       20.34
          2 |      3,536       35.36       55.70
          3 |      1,956       19.56       75.26
          4 |      1,022       10.22       85.48
          5 |        645        6.45       91.93
          6 |        363        3.63       95.56
          7 |        180        1.80       97.36
          8 |         93        0.93       98.29
          9 |         57        0.57       98.86
         10 |         33        0.33       99.19
         11 |         18        0.18       99.37
         12 |         18        0.18       99.55
         13 |         16        0.16       99.71
         14 |          6        0.06       99.77
         15 |          6        0.06       99.83
         16 |          2        0.02       99.85
         17 |          6        0.06       99.91
         19 |          1        0.01       99.92
         21 |          1        0.01       99.93
         23 |          1        0.01       99.94
         24 |          1        0.01       99.95
         26 |          1        0.01       99.96
         28 |          1        0.01       99.97
         31 |          1        0.01       99.98
         32 |          1        0.01       99.99
         61 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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