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

    BUS USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,853       98.53       98.53
          1 |         16        0.16       98.69
          2 |          1        0.01       98.70
          3 |          4        0.04       98.74
          4 |         16        0.16       98.90
          5 |          2        0.02       98.92
          6 |         11        0.11       99.03
          7 |          3        0.03       99.06
          8 |          1        0.01       99.07
          9 |         93        0.93      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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