Frequencies for first 10,000 rows of prov2710 variable in pos2004 dataset :

     states |
region code |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         99        0.99        0.99
        001 |      3,714       37.14       38.13
         AZ |      1,023       10.23       48.36
        BAK |         94        0.94       49.30
        BER |        283        2.83       52.13
         BK |        191        1.91       54.04
        BK1 |        141        1.41       55.45
         FR |        309        3.09       58.54
         L1 |        428        4.28       62.82
         L2 |        305        3.05       65.87
         L3 |        157        1.57       67.44
         L4 |        280        2.80       70.24
         L5 |        265        2.65       72.89
        LAB |          1        0.01       72.90
         M2 |          1        0.01       72.91
        ORG |        248        2.48       75.39
        RIV |        140        1.40       76.79
        RWC |        167        1.67       78.46
         S1 |        259        2.59       81.05
         S2 |        112        1.12       82.17
         S3 |        223        2.23       84.40
         SA |         49        0.49       84.89
         SB |         43        0.43       85.32
         SD |        357        3.57       88.89
        SDS |         84        0.84       89.73
         SF |        217        2.17       91.90
         SJ |        260        2.60       94.50
         SR |        139        1.39       95.89
        TUC |        226        2.26       98.15
        VEN |        185        1.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016