Frequencies for state variable in hcris2552_96_2011 dataset :

      state |      Freq.     Percent        Cum.
------------+-----------------------------------
         AL |          1        2.94        2.94
         AZ |          1        2.94        5.88
         CA |          4       11.76       17.65
         IN |          2        5.88       23.53
         ME |          1        2.94       26.47
         MN |          2        5.88       32.35
         MS |          2        5.88       38.24
         NE |          1        2.94       41.18
         NJ |          1        2.94       44.12
         OH |          3        8.82       52.94
         OK |          2        5.88       58.82
         PA |          1        2.94       61.76
         TN |          1        2.94       64.71
         TX |          8       23.53       88.24
         UT |          1        2.94       91.18
         WA |          1        2.94       94.12
         WI |          1        2.94       97.06
         WV |          1        2.94      100.00
------------+-----------------------------------
      Total |         34      100.00

by Jean Roth , jroth@nber.org , 2 Sep 2018