Frequencies for l_state variable in vehicle dataset :

    LICENSE |
      STATE |      Freq.     Percent        Cum.
------------+-----------------------------------
          9 |          1        0.13        0.13
         10 |          1        0.13        0.26
         12 |          3        0.39        0.65
         17 |          1        0.13        0.79
         28 |          1        0.13        0.92
         36 |          3        0.39        1.31
         43 |        704       92.15       93.46
         99 |         48        6.28       99.74
          . |          2        0.26      100.00
------------+-----------------------------------
      Total |        764      100.00

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