Frequencies for a_c1_21 variable in snf_rollup2540_96_1995 dataset :

    a_c1_21 |      Freq.     Percent        Cum.
------------+-----------------------------------
       1954 |          1        0.08        0.08
       6705 |          1        0.08        0.16
      11935 |          1        0.08        0.24
      15066 |          1        0.08        0.32
      26006 |          1        0.08        0.40
      30857 |          1        0.08        0.49
      47455 |          1        0.08        0.57
     152583 |          1        0.08        0.65
          . |      1,227       99.35      100.00
------------+-----------------------------------
      Total |      1,235      100.00

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