Frequencies for a_c6_42 variable in snf_rollup2540_96_1997 dataset :

    a_c6_42 |      Freq.     Percent        Cum.
------------+-----------------------------------
     -15183 |          1        0.01        0.01
       -228 |          1        0.01        0.02
       -111 |          1        0.01        0.03
        -50 |          1        0.01        0.03
        -42 |          1        0.01        0.04
          . |     11,913       99.96      100.00
------------+-----------------------------------
      Total |     11,918      100.00

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