Frequencies for usbndx_ variable in fmli011 dataset :

    usbndx_ |      Freq.     Percent        Cum.
------------+-----------------------------------
          A |      5,713       74.08       74.08
          B |        312        4.05       78.12
          C |        154        2.00       80.12
          D |      1,527       19.80       99.92
          T |          6        0.08      100.00
------------+-----------------------------------
      Total |      7,712      100.00

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