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

    NON-CDL |
    LICENCE |
       TYPE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        732        7.32        7.32
          1 |      8,571       85.71       93.03
          2 |        185        1.85       94.88
          7 |         15        0.15       95.03
          9 |        437        4.37       99.40
          . |         60        0.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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