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

Special Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,054       90.54       90.54
          1 |          2        0.02       90.56
          2 |         52        0.52       91.08
          4 |          3        0.03       91.11
          5 |         13        0.13       91.24
          9 |         14        0.14       91.38
          . |        862        8.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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