Frequencies for s3_1_c10_2001 variable in hcris2552_10_2010 dataset :

        icf |
    s300001 |
02001 01000 |      Freq.     Percent        Cum.
------------+-----------------------------------
      43.01 |          1        0.04        0.04
      573.9 |          1        0.04        0.09
        617 |          1        0.04        0.13
          . |      2,319       99.87      100.00
------------+-----------------------------------
      Total |      2,322      100.00

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