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

  occupants |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         64        0.64        0.64
          1 |      6,056       60.56       61.20
          2 |      2,161       21.61       82.81
          3 |        800        8.00       90.81
          4 |        398        3.98       94.79
          5 |        202        2.02       96.81
          6 |         67        0.67       97.48
          7 |         38        0.38       97.86
          8 |         13        0.13       97.99
          9 |          7        0.07       98.06
         10 |          8        0.08       98.14
         11 |          5        0.05       98.19
         12 |          3        0.03       98.22
         13 |          5        0.05       98.27
         14 |          3        0.03       98.30
         15 |          1        0.01       98.31
         17 |          2        0.02       98.33
         22 |          3        0.03       98.36
         30 |          1        0.01       98.37
         43 |          1        0.01       98.38
         47 |          1        0.01       98.39
         97 |         21        0.21       98.60
         99 |        140        1.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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