Frequencies for first 10,000 rows of prov2710 variable in posclia2010 dataset :

      state |
region code |      Freq.     Percent        Cum.
------------+-----------------------------------
        001 |      3,997       39.97       39.97
         AZ |      1,109       11.09       51.06
        GAA |          1        0.01       51.07
        LAB |      4,891       48.91       99.98
         M2 |          1        0.01       99.99
        TUC |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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