Frequencies for spec_use variable in person dataset :

Special Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        914       69.14       69.14
          1 |         14        1.06       70.20
          2 |         66        4.99       75.19
          3 |         63        4.77       79.95
          4 |          3        0.23       80.18
          5 |          6        0.45       80.64
          . |        256       19.36      100.00
------------+-----------------------------------
      Total |      1,322      100.00

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