Frequencies for d_4_ipf_c4_200 variable in hcris2552_10_2010 dataset :

total other |
    medical |
  education |
    d00b184 |
20000 00400 |      Freq.     Percent        Cum.
------------+-----------------------------------
     124385 |          1        0.04        0.04
     135366 |          1        0.04        0.09
     329994 |          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