Frequencies for spec_use variable in vehnit dataset :

SPECIAL USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,468       99.12       99.12
          3 |          1        0.07       99.19
          5 |          8        0.54       99.73
          7 |          3        0.20       99.93
          9 |          1        0.07      100.00
------------+-----------------------------------
      Total |      1,481      100.00

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