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

    BUS USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,933       99.33       99.33
          1 |         19        0.19       99.52
          3 |          3        0.03       99.55
          4 |         24        0.24       99.79
          5 |          7        0.07       99.86
          6 |          1        0.01       99.87
          7 |          6        0.06       99.93
          8 |          1        0.01       99.94
          9 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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