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

  occupants |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         64        0.64        0.64
          1 |      5,679       56.79       57.43
          2 |      2,371       23.71       81.14
          3 |        800        8.00       89.14
          4 |        461        4.61       93.75
          5 |        200        2.00       95.75
          6 |         94        0.94       96.69
          7 |         43        0.43       97.12
          8 |         23        0.23       97.35
          9 |         12        0.12       97.47
         10 |          9        0.09       97.56
         11 |          2        0.02       97.58
         12 |          3        0.03       97.61
         13 |          1        0.01       97.62
         14 |          1        0.01       97.63
         15 |          2        0.02       97.65
         16 |          2        0.02       97.67
         17 |          2        0.02       97.69
         19 |          1        0.01       97.70
         24 |          1        0.01       97.71
         31 |          1        0.01       97.72
         36 |          1        0.01       97.73
         45 |          2        0.02       97.75
         60 |          1        0.01       97.76
         97 |         13        0.13       97.89
         99 |        211        2.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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