Frequencies for s2_18 variable in hcris2552_96_1998 dataset :

      s2_18 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        800       12.64       12.64
          2 |      2,560       40.46       53.11
          3 |          6        0.09       53.20
          4 |      1,326       20.96       74.16
          5 |         69        1.09       75.25
          6 |         33        0.52       75.77
          7 |          6        0.09       75.87
          8 |        142        2.24       78.11
          9 |        544        8.60       86.71
         10 |        268        4.24       90.94
         11 |        381        6.02       96.97
         12 |        101        1.60       98.56
         13 |         43        0.68       99.24
          . |         48        0.76      100.00
------------+-----------------------------------
      Total |      6,327      100.00

by Jean Roth , jroth@nber.org , 6 Sep 2018