Frequencies for state variable in machread2016 dataset :

      State |      Freq.     Percent        Cum.
------------+-----------------------------------
         AK |          4        0.82        0.82
         AL |          8        1.65        2.47
         AR |          8        1.65        4.12
         AZ |         20        4.12        8.23
         DE |          7        1.44        9.67
         FL |         25        5.14       14.81
         GA |         20        4.12       18.93
         HI |          5        1.03       19.96
         IA |         12        2.47       22.43
         IL |         17        3.50       25.93
         IN |         14        2.88       28.81
         KS |          9        1.85       30.66
         LA |         10        2.06       32.72
         ME |          6        1.23       33.95
         MI |         25        5.14       39.09
         MO |         13        2.67       41.77
         MS |          7        1.44       43.21
         MT |          6        1.23       44.44
         NC |         10        2.06       46.50
         ND |          6        1.23       47.74
         NE |          8        1.65       49.38
         NH |          9        1.85       51.23
         NJ |         15        3.09       54.32
         NM |          8        1.65       55.97
         NV |         10        2.06       58.02
         OH |         27        5.56       63.58
         OK |         10        2.06       65.64
         OR |         14        2.88       68.52
         PA |         27        5.56       74.07
         SC |          9        1.85       75.93
         SD |          5        1.03       76.95
         TN |         11        2.26       79.22
         TX |         32        6.58       85.80
         UT |         11        2.26       88.07
         VA |         21        4.32       92.39
         WI |         25        5.14       97.53
         WV |          6        1.23       98.77
         WY |          6        1.23      100.00
------------+-----------------------------------
      Total |        486      100.00

by Jean Roth , jroth@nber.org , 28 Jun 2017