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

    persons |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,660       26.60       26.60
          2 |      3,641       36.41       63.01
          3 |      1,700       17.00       80.01
          4 |        910        9.10       89.11
          5 |        464        4.64       93.75
          6 |        253        2.53       96.28
          7 |        153        1.53       97.81
          8 |         87        0.87       98.68
          9 |         45        0.45       99.13
         10 |         21        0.21       99.34
         11 |         19        0.19       99.53
         12 |          9        0.09       99.62
         13 |          6        0.06       99.68
         14 |          5        0.05       99.73
         15 |          7        0.07       99.80
         16 |          4        0.04       99.84
         17 |          2        0.02       99.86
         18 |          2        0.02       99.88
         19 |          2        0.02       99.90
         21 |          1        0.01       99.91
         22 |          3        0.03       99.94
         24 |          1        0.01       99.95
         27 |          1        0.01       99.96
         29 |          1        0.01       99.97
         31 |          1        0.01       99.98
         33 |          1        0.01       99.99
         41 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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