Frequencies for ve_forms variable in accident dataset :

    Vehicle |
      Forms |
  Submitted |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         50       10.22       10.22
          1 |        314       64.21       74.44
          2 |        108       22.09       96.52
          3 |         16        3.27       99.80
          5 |          1        0.20      100.00
------------+-----------------------------------
      Total |        489      100.00

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