Frequencies for unittype variable in vehnit dataset :

  UNIT TYPE |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |        685       49.17       49.17
          3 |        682       48.96       98.13
          4 |         26        1.87      100.00
------------+-----------------------------------
      Total |      1,393      100.00

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