Frequencies for first 10,000 rows of ocupants variable in vehicle dataset :

  occupants |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         44        0.44        0.44
          1 |      6,042       60.42       60.86
          2 |      2,183       21.83       82.69
          3 |        796        7.96       90.65
          4 |        430        4.30       94.95
          5 |        211        2.11       97.06
          6 |         72        0.72       97.78
          7 |         39        0.39       98.17
          8 |         26        0.26       98.43
          9 |         13        0.13       98.56
         10 |          4        0.04       98.60
         11 |          8        0.08       98.68
         12 |          3        0.03       98.71
         14 |          2        0.02       98.73
         15 |          1        0.01       98.74
         16 |          5        0.05       98.79
         17 |          1        0.01       98.80
         18 |          3        0.03       98.83
         21 |          1        0.01       98.84
         22 |          2        0.02       98.86
         37 |          1        0.01       98.87
         52 |          1        0.01       98.88
         54 |          1        0.01       98.89
         97 |         10        0.10       98.99
         99 |        101        1.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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