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

  occupants |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         51        0.51        0.51
          1 |      6,513       65.13       65.64
          2 |      2,066       20.66       86.30
          3 |        660        6.60       92.90
          4 |        348        3.48       96.38
          5 |        158        1.58       97.96
          6 |         49        0.49       98.45
          7 |         34        0.34       98.79
          8 |         20        0.20       98.99
          9 |          5        0.05       99.04
         10 |          5        0.05       99.09
         11 |          2        0.02       99.11
         12 |          1        0.01       99.12
         13 |          1        0.01       99.13
         14 |          1        0.01       99.14
         15 |          3        0.03       99.17
         16 |          2        0.02       99.19
         18 |          1        0.01       99.20
         19 |          2        0.02       99.22
         22 |          2        0.02       99.24
         24 |          1        0.01       99.25
         31 |          1        0.01       99.26
         33 |          1        0.01       99.27
         41 |          1        0.01       99.28
         99 |         72        0.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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