Frequencies for e_b_irf_c1_31 variable in hcris2552_10_2012 dataset :

    e00c18b |
03100 00100 |      Freq.     Percent        Cum.
------------+-----------------------------------
         76 |          1        0.02        0.02
         81 |          1        0.02        0.03
        157 |          1        0.02        0.05
        450 |          1        0.02        0.06
          . |      6,223       99.94      100.00
------------+-----------------------------------
      Total |      6,227      100.00

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