Frequencies for c_1_c6_4501 variable in hcris2552_10_2011 dataset :

        icf |
    c000001 |
04501 00600 |      Freq.     Percent        Cum.
------------+-----------------------------------
    5528898 |          1        0.02        0.02
   1.46e+07 |          1        0.02        0.03
   6.19e+07 |          1        0.02        0.05
   6.29e+07 |          1        0.02        0.07
          . |      6,146       99.93      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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