Frequencies for chainstate variable in hcris2552_96_2004 dataset :

 chainstate |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,244       99.66       99.66
         CA |          1        0.02       99.68
         LA |          1        0.02       99.70
         MI |          1        0.02       99.71
         MO |          1        0.02       99.73
         NM |          2        0.03       99.76
         TE |          1        0.02       99.78
         TX |         14        0.22      100.00
------------+-----------------------------------
      Total |      6,265      100.00

by Jean Roth , jroth@nber.org , 9 Sep 2018