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

    persons |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,021       20.21       20.21
          2 |      3,594       35.94       56.15
          3 |      1,909       19.09       75.24
          4 |      1,075       10.75       85.99
          5 |        599        5.99       91.98
          6 |        328        3.28       95.26
          7 |        193        1.93       97.19
          8 |        106        1.06       98.25
          9 |         58        0.58       98.83
         10 |         42        0.42       99.25
         11 |         23        0.23       99.48
         12 |         12        0.12       99.60
         13 |         12        0.12       99.72
         14 |          7        0.07       99.79
         15 |          7        0.07       99.86
         16 |          1        0.01       99.87
         17 |          1        0.01       99.88
         18 |          2        0.02       99.90
         19 |          1        0.01       99.91
         20 |          4        0.04       99.95
         21 |          2        0.02       99.97
         24 |          1        0.01       99.98
         26 |          1        0.01       99.99
         28 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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