Frequencies for b_1_c18_39 variable in snf_rollup2540_96_2011 dataset :

 b_1_c18_39 |      Freq.     Percent        Cum.
------------+-----------------------------------
       3722 |          1        0.06        0.06
       4389 |          1        0.06        0.11
       4552 |          1        0.06        0.17
       6163 |          1        0.06        0.22
      15567 |          1        0.06        0.28
      41309 |          1        0.06        0.33
      42310 |          1        0.06        0.39
      51192 |          1        0.06        0.44
      54818 |          1        0.06        0.50
      89198 |          1        0.06        0.55
      99566 |          1        0.06        0.61
     173449 |          1        0.06        0.66
     179989 |          1        0.06        0.72
     333500 |          1        0.06        0.77
     377925 |          1        0.06        0.83
     423093 |          1        0.06        0.88
     429657 |          1        0.06        0.94
     607183 |          1        0.06        1.00
          . |      1,791       99.00      100.00
------------+-----------------------------------
      Total |      1,809      100.00

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