Frequencies for first 10,000 rows of prov2710 variable in pos2001 dataset :

     states |
region code |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         99        0.99        0.99
        001 |      3,415       34.15       35.14
         AZ |        943        9.43       44.57
        BAK |         83        0.83       45.40
        BER |        341        3.41       48.81
         BK |        284        2.84       51.65
        BK1 |         89        0.89       52.54
         FR |        360        3.60       56.14
         L1 |        447        4.47       60.61
         L2 |        335        3.35       63.96
         L3 |        114        1.14       65.10
         L4 |        317        3.17       68.27
         L5 |        291        2.91       71.18
        ORG |        251        2.51       73.69
        RIV |        150        1.50       75.19
        RWC |         16        0.16       75.35
         S1 |        306        3.06       78.41
         S2 |        118        1.18       79.59
         S3 |        229        2.29       81.88
         SA |         70        0.70       82.58
         SB |         59        0.59       83.17
         SD |        383        3.83       87.00
        SDS |        123        1.23       88.23
         SF |        246        2.46       90.69
         SJ |        243        2.43       93.12
         SR |        284        2.84       95.96
        TUC |        196        1.96       97.92
        VEN |        208        2.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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