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

  occupants |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         39        0.39        0.39
          1 |      5,933       59.33       59.72
          2 |      2,272       22.72       82.44
          3 |        821        8.21       90.65
          4 |        441        4.41       95.06
          5 |        192        1.92       96.98
          6 |         83        0.83       97.81
          7 |         31        0.31       98.12
          8 |         18        0.18       98.30
          9 |          7        0.07       98.37
         10 |          7        0.07       98.44
         11 |          5        0.05       98.49
         12 |          4        0.04       98.53
         13 |          1        0.01       98.54
         14 |          6        0.06       98.60
         15 |          1        0.01       98.61
         19 |          2        0.02       98.63
         21 |          1        0.01       98.64
         22 |          3        0.03       98.67
         24 |          1        0.01       98.68
         32 |          1        0.01       98.69
         97 |          8        0.08       98.77
         99 |        123        1.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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