Frequencies for e_b_irf_c1_20 variable in hcris2552_10_2010 dataset :

    e00c18b |
02000 00100 |      Freq.     Percent        Cum.
------------+-----------------------------------
          6 |          1        0.04        0.04
        452 |          1        0.04        0.09
       2518 |          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