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

      Drunk |
     Driver |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,533       85.33       85.33
          1 |      1,406       14.06       99.39
          9 |         61        0.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016