Frequencies for l_status variable in vehicle dataset :

    NON-CDL |
    LICENCE |
     STATUS |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         65       10.38       10.38
          3 |          2        0.32       10.70
          6 |        500       79.87       90.58
          9 |         58        9.27       99.84
          . |          1        0.16      100.00
------------+-----------------------------------
      Total |        626      100.00

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