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

Special Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,914       99.14       99.14
          1 |          6        0.06       99.20
          3 |          6        0.06       99.26
          4 |          1        0.01       99.27
          5 |         22        0.22       99.49
          6 |          5        0.05       99.54
          7 |          3        0.03       99.57
          9 |         43        0.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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