Frequencies for veh_no variable in parkwork dataset :

    Vehicle |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         35        3.49        3.49
          2 |        554       55.29       58.78
          3 |        269       26.85       85.63
          4 |         86        8.58       94.21
          5 |         28        2.79       97.01
          6 |         16        1.60       98.60
          7 |          7        0.70       99.30
          8 |          3        0.30       99.60
          9 |          2        0.20       99.80
         10 |          1        0.10       99.90
         11 |          1        0.10      100.00
------------+-----------------------------------
      Total |      1,002      100.00

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