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

    persons |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,091       20.91       20.91
          2 |      3,514       35.14       56.05
          3 |      1,951       19.51       75.56
          4 |      1,035       10.35       85.91
          5 |        617        6.17       92.08
          6 |        333        3.33       95.41
          7 |        188        1.88       97.29
          8 |        115        1.15       98.44
          9 |         58        0.58       99.02
         10 |         31        0.31       99.33
         11 |         17        0.17       99.50
         12 |         14        0.14       99.64
         13 |          9        0.09       99.73
         14 |         10        0.10       99.83
         15 |          4        0.04       99.87
         16 |          1        0.01       99.88
         17 |          6        0.06       99.94
         21 |          1        0.01       99.95
         25 |          1        0.01       99.96
         26 |          1        0.01       99.97
         27 |          1        0.01       99.98
         43 |          1        0.01       99.99
         46 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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