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

    persons |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,455       24.55       24.55
          2 |      3,546       35.46       60.01
          3 |      1,761       17.61       77.62
          4 |        977        9.77       87.39
          5 |        528        5.28       92.67
          6 |        315        3.15       95.82
          7 |        167        1.67       97.49
          8 |        115        1.15       98.64
          9 |         51        0.51       99.15
         10 |         23        0.23       99.38
         11 |         11        0.11       99.49
         12 |         17        0.17       99.66
         13 |          8        0.08       99.74
         14 |          5        0.05       99.79
         15 |          6        0.06       99.85
         16 |          1        0.01       99.86
         17 |          3        0.03       99.89
         18 |          2        0.02       99.91
         19 |          3        0.03       99.94
         20 |          2        0.02       99.96
         21 |          2        0.02       99.98
         28 |          1        0.01       99.99
         43 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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