Frequencies for s3_1_c7_2001 variable in hcris2552_10_2011 dataset :

        icf |
    s300001 |
02001 00700 |      Freq.     Percent        Cum.
------------+-----------------------------------
       3485 |          1        0.02        0.02
       7773 |          1        0.02        0.03
      78791 |          1        0.02        0.05
     100430 |          1        0.02        0.07
          . |      6,146       99.93      100.00
------------+-----------------------------------
      Total |      6,150      100.00

by Jean Roth , jroth@nber.org , 23 Aug 2018