Frequencies for s3_1_c3_18 variable in hcris2552_10_2010 dataset :

subprovider |
          1 |
    s300001 |
01800 00300 |      Freq.     Percent        Cum.
------------+-----------------------------------
       5475 |          1        0.04        0.04
       8030 |          2        0.09        0.13
       9010 |          1        0.04        0.17
      18250 |          1        0.04        0.22
      37230 |          1        0.04        0.26
          . |      2,316       99.74      100.00
------------+-----------------------------------
      Total |      2,322      100.00

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