Frequencies for pve_forms variable in parkwork dataset :

  Number of |
    vehicle |
      forms |
  submitted |
  for MV in |
  transport |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        823       77.35       77.35
          2 |        209       19.64       96.99
          3 |         26        2.44       99.44
          4 |          6        0.56      100.00
------------+-----------------------------------
      Total |      1,064      100.00

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