Frequencies for a_c2_49 variable in snf_rollup2540_96_1996 dataset :

    a_c2_49 |      Freq.     Percent        Cum.
------------+-----------------------------------
        344 |          1        0.01        0.01
       2903 |          1        0.01        0.02
       3183 |          1        0.01        0.03
       5388 |          1        0.01        0.04
      80768 |          2        0.02        0.06
     253046 |          1        0.01        0.07
          . |      9,601       99.93      100.00
------------+-----------------------------------
      Total |      9,608      100.00

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