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

Special Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,092       90.92       90.92
          1 |         10        0.10       91.02
          3 |         15        0.15       91.17
          4 |          3        0.03       91.20
          5 |         11        0.11       91.31
          9 |          4        0.04       91.35
          . |        865        8.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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