Frequencies for b_1_c18_39 variable in snf_rollup2540_96_1995 dataset :

 b_1_c18_39 |      Freq.     Percent        Cum.
------------+-----------------------------------
        221 |          1        0.08        0.08
        390 |          1        0.08        0.16
        567 |          1        0.08        0.24
        582 |          1        0.08        0.32
        895 |          1        0.08        0.40
       5249 |          1        0.08        0.49
       5377 |          1        0.08        0.57
       7041 |          1        0.08        0.65
       7298 |          1        0.08        0.73
       7892 |          1        0.08        0.81
       8814 |          1        0.08        0.89
      15962 |          1        0.08        0.97
      16105 |          1        0.08        1.05
      32381 |          1        0.08        1.13
      36811 |          1        0.08        1.21
      41067 |          1        0.08        1.30
      43058 |          1        0.08        1.38
      44796 |          1        0.08        1.46
      48938 |          1        0.08        1.54
      51361 |          1        0.08        1.62
     220759 |          1        0.08        1.70
     368937 |          1        0.08        1.78
          . |      1,213       98.22      100.00
------------+-----------------------------------
      Total |      1,235      100.00

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