Frequencies for a_c1_40 variable in snf_rollup2540_96_1995 dataset :

    a_c1_40 |      Freq.     Percent        Cum.
------------+-----------------------------------
        343 |          1        0.08        0.08
       1158 |          1        0.08        0.16
       1366 |          1        0.08        0.24
       3687 |          1        0.08        0.32
      16432 |          1        0.08        0.40
      29762 |          1        0.08        0.49
      81870 |          1        0.08        0.57
          . |      1,228       99.43      100.00
------------+-----------------------------------
      Total |      1,235      100.00

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