Frequencies for spec_use variable in vehicle dataset :

SPECIAL USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        677       94.55       94.55
          7 |          1        0.14       94.69
          9 |         38        5.31      100.00
------------+-----------------------------------
      Total |        716      100.00

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