Frequencies for ffrm_ncx variable in fmli011 dataset :

   ffrm_ncx |      Freq.     Percent        Cum.
------------+-----------------------------------
          D |      7,707       99.94       99.94
          T |          5        0.06      100.00
------------+-----------------------------------
      Total |      7,712      100.00

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