Frequencies for c_1_c6_03970 variable in hcris2552_96_1997 dataset :

c_1_c6_0397 |
          0 |      Freq.     Percent        Cum.
------------+-----------------------------------
        531 |          1        0.02        0.02
        874 |          1        0.02        0.03
      17663 |          1        0.02        0.05
      37831 |          1        0.02        0.06
          . |      6,376       99.94      100.00
------------+-----------------------------------
      Total |      6,380      100.00

by Jean Roth , jroth@nber.org , 6 Sep 2018