Frequencies for first 10,000 rows of veh_no variable in person dataset :

    vehicle |
     number |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        937        9.37        9.37
          1 |      5,959       59.59       68.96
          2 |      2,434       24.34       93.30
          3 |        448        4.48       97.78
          4 |        149        1.49       99.27
          5 |         37        0.37       99.64
          6 |         18        0.18       99.82
          7 |          3        0.03       99.85
          8 |          1        0.01       99.86
          9 |          2        0.02       99.88
         10 |          1        0.01       99.89
         11 |          1        0.01       99.90
         12 |          1        0.01       99.91
         13 |          2        0.02       99.93
         14 |          2        0.02       99.95
         15 |          1        0.01       99.96
         16 |          1        0.01       99.97
         17 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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