Frequencies for incl_ssa variable in fmli011 dataset :

   incl_ssa |      Freq.     Percent        Cum.
------------+-----------------------------------
          A |      7,630       98.94       98.94
          B |         27        0.35       99.29
          C |         23        0.30       99.59
          D |         31        0.40       99.99
          T |          1        0.01      100.00
------------+-----------------------------------
      Total |      7,712      100.00

by Jean Roth , jroth@nber.org , 17 Mar 2016