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

Special Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,941       99.41       99.41
          1 |          7        0.07       99.48
          2 |          1        0.01       99.49
          3 |          1        0.01       99.50
          5 |         22        0.22       99.72
          6 |          4        0.04       99.76
          7 |          2        0.02       99.78
         99 |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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