Frequencies for first 10,000 rows of a_lic_c variable in veh_aux dataset :

    License |
 Compliance |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,631       76.31       76.31
          2 |      1,895       18.95       95.26
          3 |        474        4.74      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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