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

Special Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,899       98.99       98.99
          1 |          9        0.09       99.08
          2 |          2        0.02       99.10
          3 |          2        0.02       99.12
          4 |          3        0.03       99.15
          5 |         24        0.24       99.39
          6 |          5        0.05       99.44
          7 |          1        0.01       99.45
          9 |         55        0.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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