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

    non-cdl |
    license |
       type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        521        5.21        5.21
          1 |      8,892       88.92       94.13
          2 |        115        1.15       95.28
          6 |         64        0.64       95.92
          7 |         41        0.41       96.33
          8 |          3        0.03       96.36
          9 |        364        3.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016