Frequencies for spec_use variable in vehnit dataset :

SPECIAL USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,258       98.90       98.90
          1 |          1        0.08       98.98
          3 |          1        0.08       99.06
          5 |          8        0.63       99.69
          6 |          1        0.08       99.76
          7 |          1        0.08       99.84
          9 |          2        0.16      100.00
------------+-----------------------------------
      Total |      1,272      100.00

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