Frequencies for ocupants variable in vehicle dataset :

  occupants |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          2        0.26        0.26
          1 |        532       69.63       69.90
          2 |        126       16.49       86.39
          3 |         65        8.51       94.90
          4 |         23        3.01       97.91
          5 |         10        1.31       99.21
          6 |          5        0.65       99.87
          9 |          1        0.13      100.00
------------+-----------------------------------
      Total |        764      100.00

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