Frequencies for first 10,000 rows of rgn_cd variable in pos2008 dataset :

region code |      Freq.     Percent        Cum.
------------+-----------------------------------
         04 |      1,850       18.50       18.50
         06 |      1,920       19.20       37.70
         09 |      5,974       59.74       97.44
         10 |        256        2.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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