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

    Vehicle |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        878        8.78        8.78
          1 |      6,304       63.04       71.82
          2 |      2,420       24.20       96.02
          3 |        311        3.11       99.13
          4 |         49        0.49       99.62
          5 |          9        0.09       99.71
          6 |          3        0.03       99.74
          7 |          2        0.02       99.76
          8 |          1        0.01       99.77
          9 |          1        0.01       99.78
         10 |          1        0.01       99.79
         11 |          1        0.01       99.80
         12 |          1        0.01       99.81
         13 |          1        0.01       99.82
         14 |          1        0.01       99.83
         15 |          1        0.01       99.84
         16 |          1        0.01       99.85
         17 |          1        0.01       99.86
         18 |          2        0.02       99.88
         19 |          1        0.01       99.89
         20 |          1        0.01       99.90
         21 |          1        0.01       99.91
         22 |          1        0.01       99.92
         23 |          3        0.03       99.95
         24 |          1        0.01       99.96
         25 |          1        0.01       99.97
         26 |          1        0.01       99.98
         27 |          1        0.01       99.99
         28 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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