Frequencies for first 10,000 rows of state_rgn_cd variable in pos1994 dataset :

     states |
region code |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        109        1.09        1.09
        001 |      3,119       31.19       32.28
         1A |          1        0.01       32.29
         AZ |        956        9.56       41.85
        BER |        450        4.50       46.35
         BK |        347        3.47       49.82
         FR |        353        3.53       53.35
         L1 |        341        3.41       56.76
         L2 |        304        3.04       59.80
         L3 |         68        0.68       60.48
         L4 |        310        3.10       63.58
         L5 |        294        2.94       66.52
        LAB |         11        0.11       66.63
         M1 |        453        4.53       71.16
         M2 |        344        3.44       74.60
        ORG |        232        2.32       76.92
         S1 |        388        3.88       80.80
         S3 |        198        1.98       82.78
         SA |         76        0.76       83.54
         SB |        103        1.03       84.57
         SD |        399        3.99       88.56
         SF |        242        2.42       90.98
         SJ |        273        2.73       93.71
         SR |        281        2.81       96.52
        TUC |        113        1.13       97.65
        VEN |        235        2.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017