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

     Driver |
    License |
       Type |
 Compliance |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        450        4.50        4.50
          1 |         21        0.21        4.71
          2 |      1,295       12.95       17.66
          3 |      7,604       76.04       93.70
          9 |        630        6.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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