Frequencies for a_c2_50 variable in snf_rollup2540_96_1997 dataset :

    a_c2_50 |      Freq.     Percent        Cum.
------------+-----------------------------------
        791 |          1        0.01        0.01
        939 |          1        0.01        0.02
      21773 |          1        0.01        0.03
      27848 |          1        0.01        0.03
      27883 |          1        0.01        0.04
      32487 |          1        0.01        0.05
      42316 |          2        0.02        0.07
      87356 |          1        0.01        0.08
     177337 |          1        0.01        0.08
     189280 |          1        0.01        0.09
     220361 |          1        0.01        0.10
          . |     11,906       99.90      100.00
------------+-----------------------------------
      Total |     11,918      100.00

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