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

     DRIVER |
    LICENCE |
       TYPE |
 COMPLIANCE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        733        7.33        7.33
          1 |         18        0.18        7.51
          2 |        970        9.70       17.21
          3 |      7,775       77.75       94.96
          9 |        444        4.44       99.40
          . |         60        0.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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