Frequencies for first 10,000 rows of rgn_cd variable in pos2014 dataset :

Region Code |      Freq.     Percent        Cum.
------------+-----------------------------------
         10 |        279        2.79        2.79
          4 |      2,061       20.61       23.40
          6 |      2,075       20.75       44.15
          9 |      5,585       55.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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