Frequencies for pve_forms variable in parkwork dataset :

  number of |
    vehicle |
      forms |
  submitted |
  for mv in |
  transport |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        877       76.53       76.53
          2 |        217       18.94       95.46
          3 |         39        3.40       98.87
          4 |          9        0.79       99.65
          5 |          3        0.26       99.91
          6 |          1        0.09      100.00
------------+-----------------------------------
      Total |      1,146      100.00

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