Frequencies for first 10,000 rows of spec_use variable in person dataset :

special use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,022       90.22       90.22
          1 |          7        0.07       90.29
          3 |          1        0.01       90.30
          5 |          6        0.06       90.36
          6 |          5        0.05       90.41
          7 |         20        0.20       90.61
         99 |          2        0.02       90.63
          . |        937        9.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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