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

    Vehicle |
 Trailering |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,590       85.90       85.90
          1 |        509        5.09       90.99
          2 |         41        0.41       91.40
          3 |          2        0.02       91.42
          4 |          2        0.02       91.44
          9 |         60        0.60       92.04
          . |        796        7.96      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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