Frequencies for unittype variable in vehnit dataset :

  UNIT TYPE |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |        639       48.12       48.12
          3 |        653       49.17       97.29
          4 |         36        2.71      100.00
------------+-----------------------------------
      Total |      1,328      100.00

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