Frequencies for first 10,000 rows of drunk_dr variable in accident dataset :

   Drinking |
    Drivers |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,137       61.37       61.37
          1 |      3,671       36.71       98.08
          2 |        191        1.91       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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