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

    vehicle |
   trailing |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,631       86.31       86.31
          1 |        434        4.34       90.65
          2 |         24        0.24       90.89
          4 |          6        0.06       90.95
          5 |         18        0.18       91.13
          6 |          5        0.05       91.18
          9 |          7        0.07       91.25
          . |        875        8.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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