Frequencies for first 10,000 rows of rgn_cd variable in posclia2013 dataset :

Region Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        372        3.72        3.72
         10 |        284        2.84        6.56
          2 |        675        6.75       13.31
          3 |        732        7.32       20.63
          4 |      1,928       19.28       39.91
          5 |      1,309       13.09       53.00
          6 |      1,235       12.35       65.35
          7 |        410        4.10       69.45
          8 |        294        2.94       72.39
          9 |      2,761       27.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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