Frequencies for cred_inx variable in fmli132 dataset :

   cred_inx |      Freq.     Percent        Cum.
------------+-----------------------------------
          A |      6,222       92.01       92.01
          C |        195        2.88       94.90
          D |        340        5.03       99.93
          T |          5        0.07      100.00
------------+-----------------------------------
      Total |      6,762      100.00

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