Frequencies for stck_rbx variable in fmli132 dataset :

   stck_rbx |      Freq.     Percent        Cum.
------------+-----------------------------------
          A |      6,717       99.33       99.33
          B |          5        0.07       99.41
          D |         40        0.59      100.00
------------+-----------------------------------
      Total |      6,762      100.00

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