Frequencies for first 10,000 rows of rgn_cd variable in pos2006 dataset :

region code |      Freq.     Percent        Cum.
------------+-----------------------------------
         04 |      1,782       17.82       17.82
         06 |      1,858       18.58       36.40
         09 |      6,114       61.14       97.54
         10 |        246        2.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017