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

Special Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,916       99.16       99.16
          1 |          9        0.09       99.25
          3 |          2        0.02       99.27
          4 |          3        0.03       99.30
          5 |         24        0.24       99.54
          6 |          2        0.02       99.56
          7 |          3        0.03       99.59
          9 |         41        0.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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