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

    bus use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,931       99.31       99.31
          1 |         20        0.20       99.51
          4 |          4        0.04       99.55
          5 |         10        0.10       99.65
          6 |         23        0.23       99.88
          7 |          3        0.03       99.91
          8 |          1        0.01       99.92
         98 |          2        0.02       99.94
         99 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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