Frequencies for l_restri variable in vehicle dataset :

 COMPLIANCE |
      W/LIC |
RESTRICTION |
          S |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        433       91.74       91.74
          9 |         39        8.26      100.00
------------+-----------------------------------
      Total |        472      100.00

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