Frequencies for c_1_c6_03400 variable in hcris2552_96_2011 dataset :

c_1_c6_0340 |
          0 |      Freq.     Percent        Cum.
------------+-----------------------------------
     897774 |          1        2.94        2.94
     947084 |          1        2.94        5.88
    1335871 |          1        2.94        8.82
    2176719 |          1        2.94       11.76
          . |         30       88.24      100.00
------------+-----------------------------------
      Total |         34      100.00

by Jean Roth , jroth@nber.org , 2 Sep 2018