Frequencies for s3_1_c5_17 variable in hcris2552_10_2011 dataset :

        irf |
    s300001 |
01700 00500 |      Freq.     Percent        Cum.
------------+-----------------------------------
         20 |          1        0.02        0.02
        166 |          1        0.02        0.03
        455 |          1        0.02        0.05
          . |      6,147       99.95      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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