Frequencies for b_1_c21_44 variable in hcris2552_10_2010 dataset :

        snf |
    b000001 |
04400 02100 |      Freq.     Percent        Cum.
------------+-----------------------------------
        405 |          1        0.04        0.04
        901 |          1        0.04        0.09
       2294 |          1        0.04        0.13
       4428 |          1        0.04        0.17
      30571 |          1        0.04        0.22
      41439 |          1        0.04        0.26
     586124 |          1        0.04        0.30
          . |      2,315       99.70      100.00
------------+-----------------------------------
      Total |      2,322      100.00

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