Frequencies for first 10,000 rows of ve_forms variable in vehicle dataset :

   ve_forms |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,150       41.50       41.50
          2 |      4,276       42.76       84.26
          3 |        918        9.18       93.44
          4 |        382        3.82       97.26
          5 |        110        1.10       98.36
          6 |         60        0.60       98.96
          7 |         28        0.28       99.24
          8 |          8        0.08       99.32
          9 |          9        0.09       99.41
         10 |         10        0.10       99.51
         11 |         22        0.22       99.73
         13 |         13        0.13       99.86
         14 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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