Frequencies for sale_ncx variable in fmli011 dataset :

   sale_ncx |      Freq.     Percent        Cum.
------------+-----------------------------------
          A |      7,589       98.41       98.41
          B |          2        0.03       98.43
          C |         11        0.14       98.57
          D |        107        1.39       99.96
          T |          3        0.04      100.00
------------+-----------------------------------
      Total |      7,712      100.00

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