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

    BUS USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,922       99.22       99.22
          1 |         12        0.12       99.34
          3 |          1        0.01       99.35
          4 |         27        0.27       99.62
          5 |         12        0.12       99.74
          6 |          1        0.01       99.75
          7 |          2        0.02       99.77
          9 |         23        0.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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