Frequencies for first 10,000 rows of drink variable in natl2001 dataset :

    Average |
  Number of |
 Drinks Per |
       Week |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,953       99.53       99.53
          1 |         18        0.18       99.71
          2 |         13        0.13       99.84
          3 |          5        0.05       99.89
          9 |          1        0.01       99.90
         99 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015