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

Special Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,078       90.78       90.78
          1 |          2        0.02       90.80
          2 |          8        0.08       90.88
          3 |          7        0.07       90.95
          4 |          2        0.02       90.97
          5 |         21        0.21       91.18
          6 |          8        0.08       91.26
          7 |         14        0.14       91.40
          9 |         40        0.40       91.80
          . |        820        8.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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