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

Special Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,947       99.47       99.47
          1 |         13        0.13       99.60
          2 |          1        0.01       99.61
          3 |          1        0.01       99.62
          4 |          1        0.01       99.63
          5 |         21        0.21       99.84
          9 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016