Frequencies for pve_forms variable in parkwork dataset :

  number of |
    vehicle |
      forms |
  submitted |
  for mv in |
  transport |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        833       76.49       76.49
          2 |        200       18.37       94.86
          3 |         30        2.75       97.61
          4 |         21        1.93       99.54
          5 |          1        0.09       99.63
          6 |          4        0.37      100.00
------------+-----------------------------------
      Total |      1,089      100.00

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