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

   Previous |
        DWI |
Convictions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,842       88.42       88.42
          1 |        445        4.45       92.87
          2 |         88        0.88       93.75
          3 |         15        0.15       93.90
          4 |          7        0.07       93.97
          5 |          1        0.01       93.98
         99 |        602        6.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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