Frequencies for s3_1_c11_19 variable in hcris2552_10_2013 dataset :

        snf |
    s300001 |
01900 01100 |      Freq.     Percent        Cum.
------------+-----------------------------------
        .41 |          1        0.02        0.02
          1 |          1        0.02        0.03
          . |      6,246       99.97      100.00
------------+-----------------------------------
      Total |      6,248      100.00

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