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

     Driver |
    License |
       Type |
 Compliance |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        490        4.90        4.90
          1 |          1        0.01        4.91
          2 |      1,496       14.96       19.87
          3 |      7,433       74.33       94.20
          9 |        580        5.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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