Frequencies for e_b_ipf_c1_22 variable in hcris2552_10_2011 dataset :

    e00b18b |
02200 00100 |      Freq.     Percent        Cum.
------------+-----------------------------------
        145 |          1        0.02        0.02
       7939 |          1        0.02        0.03
      35287 |          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