Frequencies for pve_forms variable in parkwork dataset :

  number of |
    vehicle |
      forms |
  submitted |
  for mv in |
  transport |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        860       78.83       78.83
          2 |        180       16.50       95.33
          3 |         35        3.21       98.53
          4 |         14        1.28       99.82
          5 |          1        0.09       99.91
          7 |          1        0.09      100.00
------------+-----------------------------------
      Total |      1,091      100.00

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