Frequencies for reg_stat variable in vehicle dataset :

REGISTRATIO |
    N STATE |      Freq.     Percent        Cum.
------------+-----------------------------------
         43 |        600       95.39       95.39
         99 |         29        4.61      100.00
------------+-----------------------------------
      Total |        629      100.00

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