Frequencies for a_c1_49 variable in snf_rollup2540_96_1996 dataset :

    a_c1_49 |      Freq.     Percent        Cum.
------------+-----------------------------------
      60783 |          1        0.01        0.01
     346237 |          1        0.01        0.02
     378538 |          1        0.01        0.03
     544208 |          1        0.01        0.04
     634931 |          1        0.01        0.05
     758180 |          2        0.02        0.07
          . |      9,601       99.93      100.00
------------+-----------------------------------
      Total |      9,608      100.00

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