Frequencies for first 10,000 rows of bus_use variable in vehicle dataset :

    bus use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,924       99.24       99.24
          1 |         18        0.18       99.42
          4 |          3        0.03       99.45
          5 |          6        0.06       99.51
          6 |         25        0.25       99.76
          7 |          3        0.03       99.79
          8 |          2        0.02       99.81
         98 |          1        0.01       99.82
         99 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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