Frequencies for b_1_c18_44 variable in snf_rollup2540_96_1997 dataset :

 b_1_c18_44 |      Freq.     Percent        Cum.
------------+-----------------------------------
         82 |          1        0.01        0.01
        663 |          1        0.01        0.02
        716 |          1        0.01        0.03
        719 |          1        0.01        0.03
        724 |          1        0.01        0.04
       3925 |          1        0.01        0.05
       6572 |          1        0.01        0.06
       7265 |          1        0.01        0.07
       8371 |          1        0.01        0.08
     147118 |          1        0.01        0.08
          . |     11,908       99.92      100.00
------------+-----------------------------------
      Total |     11,918      100.00

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