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

    Vehicle |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        792        7.92        7.92
          1 |      6,274       62.74       70.66
          2 |      2,562       25.62       96.28
          3 |        267        2.67       98.95
          4 |         43        0.43       99.38
          5 |          9        0.09       99.47
          6 |          9        0.09       99.56
          7 |          7        0.07       99.63
          8 |          5        0.05       99.68
          9 |          5        0.05       99.73
         10 |          3        0.03       99.76
         11 |          2        0.02       99.78
         12 |          9        0.09       99.87
         13 |          2        0.02       99.89
         14 |          3        0.03       99.92
         15 |          3        0.03       99.95
         16 |          3        0.03       99.98
         17 |          1        0.01       99.99
         18 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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