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

SPECIAL USE |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,196       91.96       91.96
          1 |          7        0.07       92.03
          3 |          1        0.01       92.04
          4 |          4        0.04       92.08
          5 |         12        0.12       92.20
          6 |          2        0.02       92.22
          7 |          5        0.05       92.27
          9 |        106        1.06       93.33
          . |        667        6.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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