Frequencies for e_b_ipf_c1_31 variable in hcris2552_10_2010 dataset :

    e00b18b |
03100 00100 |      Freq.     Percent        Cum.
------------+-----------------------------------
         47 |          1        0.04        0.04
         76 |          1        0.04        0.09
        220 |          1        0.04        0.13
       1094 |          1        0.04        0.17
          . |      2,318       99.83      100.00
------------+-----------------------------------
      Total |      2,322      100.00

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