Frequencies for a_c2_34 variable in snf_rollup2540_96_1995 dataset :

    a_c2_34 |      Freq.     Percent        Cum.
------------+-----------------------------------
     -12882 |          1        0.08        0.08
       5953 |          1        0.08        0.16
          . |      1,233       99.84      100.00
------------+-----------------------------------
      Total |      1,235      100.00

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