Frequencies for spec_ind variable in hcris2552_96_1996 dataset :

    special |
  indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,060       99.97       99.97
          Y |          2        0.03      100.00
------------+-----------------------------------
      Total |      6,062      100.00

by Jean Roth , jroth@nber.org , 6 Sep 2018