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

Special Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,080       90.80       90.80
          1 |         10        0.10       90.90
          3 |         42        0.42       91.32
          4 |          2        0.02       91.34
          5 |          7        0.07       91.41
          6 |          4        0.04       91.45
          9 |         34        0.34       91.79
          . |        821        8.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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