Frequencies for a_c1_56 variable in snf_rollup2540_96_1995 dataset :

    a_c1_56 |      Freq.     Percent        Cum.
------------+-----------------------------------
      45674 |          1        0.08        0.08
      68241 |          1        0.08        0.16
     287132 |          1        0.08        0.24
     289435 |          1        0.08        0.32
     419582 |          1        0.08        0.40
          . |      1,230       99.60      100.00
------------+-----------------------------------
      Total |      1,235      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018