Frequencies for state variable in snp2013 dataset :

          State |      Freq.     Percent        Cum.
----------------+-----------------------------------
                |          1        0.01        0.01
        Alabama |        111        0.93        0.94
        Arizona |         79        0.66        1.61
       Arkansas |        825        6.94        8.55
     California |        155        1.30        9.86
       Colorado |         54        0.45       10.31
    Connecticut |         10        0.08       10.39
       Delaware |         12        0.10       10.49
        Florida |        287        2.42       12.91
        Georgia |      1,481       12.46       25.37
         Hawaii |         15        0.13       25.50
          Idaho |         33        0.28       25.78
       Illinois |        216        1.82       27.60
        Indiana |        170        1.43       29.03
           Iowa |        223        1.88       30.90
         Kansas |          5        0.04       30.95
       Kentucky |         32        0.27       31.22
      Louisiana |         96        0.81       32.02
       Maryland |         49        0.41       32.44
  Massachusetts |         46        0.39       32.82
       Michigan |        117        0.98       33.81
      Minnesota |        316        2.66       36.47
    Mississippi |        169        1.42       37.89
       Missouri |      1,005        8.46       46.35
        Montana |         18        0.15       46.50
       Nebraska |         56        0.47       46.97
         Nevada |          9        0.08       47.05
     New Jersey |         71        0.60       47.64
     New Mexico |        134        1.13       48.77
       New York |        432        3.64       52.41
 North Carolina |        139        1.17       53.58
           Ohio |        195        1.64       55.22
       Oklahoma |         10        0.08       55.30
         Oregon |         37        0.31       55.61
   Pennsylvania |        416        3.50       59.11
    Puerto Rico |      1,375       11.57       70.69
   Rhode Island |          4        0.03       70.72
 South Carolina |        456        3.84       74.56
      Tennessee |        494        4.16       78.72
          Texas |      2,153       18.12       96.84
       Virginia |         57        0.48       97.32
     Washington |         49        0.41       97.73
Washington D.C. |          3        0.03       97.75
  West Virginia |          6        0.05       97.80
      Wisconsin |        261        2.20      100.00
----------------+-----------------------------------
          Total |     11,882      100.00

by Jean Roth , jroth@nber.org , 14 Apr 2016