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

    BUS USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,868       98.68       98.68
          1 |         10        0.10       98.78
          3 |          4        0.04       98.82
          4 |         26        0.26       99.08
          5 |          3        0.03       99.11
          6 |          5        0.05       99.16
          7 |          3        0.03       99.19
          9 |         81        0.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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