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

   previous |
        dwi |
convictions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,293       92.93       92.93
          1 |        213        2.13       95.06
          2 |         30        0.30       95.36
          3 |          6        0.06       95.42
          5 |          1        0.01       95.43
          6 |          1        0.01       95.44
         99 |        392        3.92       99.36
        998 |         64        0.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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