Frequencies for a_lic_s variable in veh_aux dataset :

    License |
     Status |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        466       70.61       70.61
          2 |         41        6.21       76.82
          3 |         37        5.61       82.42
          4 |        116       17.58      100.00
------------+-----------------------------------
      Total |        660      100.00

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