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

  number of |
  occupants |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         51        0.51        0.51
          1 |      6,864       68.64       69.15
          2 |      1,891       18.91       88.06
          3 |        603        6.03       94.09
          4 |        316        3.16       97.25
          5 |        154        1.54       98.79
          6 |         52        0.52       99.31
          7 |         20        0.20       99.51
          8 |         19        0.19       99.70
          9 |          8        0.08       99.78
         10 |          7        0.07       99.85
         11 |          1        0.01       99.86
         13 |          1        0.01       99.87
         14 |          2        0.02       99.89
         15 |          1        0.01       99.90
         17 |          1        0.01       99.91
         19 |          2        0.02       99.93
         20 |          1        0.01       99.94
         22 |          2        0.02       99.96
         35 |          1        0.01       99.97
         38 |          1        0.01       99.98
         40 |          1        0.01       99.99
         99 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016