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

    non-cdl |
    license |
       type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        560        5.60        5.60
          1 |      8,897       88.97       94.57
          2 |         97        0.97       95.54
          6 |         69        0.69       96.23
          7 |         36        0.36       96.59
          8 |          5        0.05       96.64
          9 |        336        3.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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