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

SPECIAL USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,897       98.97       98.97
          1 |          8        0.08       99.05
          2 |          1        0.01       99.06
          3 |          4        0.04       99.10
          4 |          1        0.01       99.11
          5 |         12        0.12       99.23
          6 |          1        0.01       99.24
          7 |          4        0.04       99.28
          9 |         72        0.72      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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