Frequencies for pvintype variable in parkwork dataset :

VIN Vehicle |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          * |          2        0.19        0.19
          M |          8        0.75        0.94
          P |        590       55.45       56.39
          T |        421       39.57       95.96
          U |         43        4.04      100.00
------------+-----------------------------------
      Total |      1,064      100.00

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