Frequencies for e_b_ipf_c1_4 variable in hcris2552_10_2010 dataset :

    e00b18b |
00400 00100 |      Freq.     Percent        Cum.
------------+-----------------------------------
        901 |          1        0.04        0.04
        916 |          1        0.04        0.09
        978 |          1        0.04        0.13
       1377 |          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