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

    vehicle |
   trailing |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,612       86.12       86.12
          1 |        405        4.05       90.17
          2 |         25        0.25       90.42
          4 |          1        0.01       90.43
          5 |          8        0.08       90.51
          6 |          6        0.06       90.57
          9 |          6        0.06       90.63
          . |        937        9.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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