Frequencies for abbr variable in msabea dataset :

 State Name |
Abbreviatio |
          n |      Freq.     Percent        Cum.
------------+-----------------------------------
         AK |         41        1.25        1.25
         AL |         68        2.07        3.31
         AR |         76        2.31        5.62
         AZ |         16        0.49        6.11
         CA |         60        1.82        7.93
         CO |         65        1.98        9.91
         CT |          9        0.27       10.18
         DC |          1        0.03       10.21
         DE |          4        0.12       10.33
         FL |         69        2.10       12.43
         GA |        160        4.86       17.29
         HI |          6        0.18       17.48
         IA |        100        3.04       20.52
         ID |         45        1.37       21.88
         IL |        103        3.13       25.02
         IN |         93        2.83       27.84
         KS |        106        3.22       31.06
         KY |        121        3.68       34.74
         LA |         65        1.98       36.72
         MA |         15        0.46       37.17
         MD |         25        0.76       37.93
         ME |         17        0.52       38.45
         MI |         84        2.55       41.00
         MN |         88        2.67       43.68
         MO |        116        3.53       47.20
         MS |         83        2.52       49.73
         MT |         58        1.76       51.49
         NC |        101        3.07       54.56
         ND |         54        1.64       56.20
         NE |         94        2.86       59.06
         NH |         11        0.33       59.39
         NJ |         22        0.67       60.06
         NM |         34        1.03       61.09
         NV |         18        0.55       61.64
         NY |         63        1.91       63.56
         OH |         89        2.71       66.26
         OK |         78        2.37       68.63
         OR |         37        1.12       69.76
         PA |         68        2.07       71.82
         PR |         79        2.40       74.22
         RI |          6        0.18       74.41
         SC |         47        1.43       75.84
         SD |         68        2.07       77.90
         TN |         96        2.92       80.82
         TX |        255        7.75       88.57
         UT |         30        0.91       89.48
         VA |        138        4.19       93.68
         VT |         15        0.46       94.13
         WA |         40        1.22       95.35
         WI |         73        2.22       97.57
         WV |         56        1.70       99.27
         WY |         24        0.73      100.00
------------+-----------------------------------
      Total |      3,290      100.00

by Jean Roth , jroth@nber.org , 20 Apr 2017