Frequencies for b_1_c18_5010 variable in snf_rollup2540_96_1997 dataset :

b_1_c18_501 |
          0 |      Freq.     Percent        Cum.
------------+-----------------------------------
     622079 |          1        0.01        0.01
     827799 |          1        0.01        0.02
     836617 |          1        0.01        0.03
          . |     11,915       99.97      100.00
------------+-----------------------------------
      Total |     11,918      100.00

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