Frequencies for first 10,000 rows of rgn_cd variable in pos1994 dataset :

region code |      Freq.     Percent        Cum.
------------+-----------------------------------
         04 |      1,517       15.17       15.17
         06 |      1,446       14.46       29.63
         09 |      6,853       68.53       98.16
         10 |        184        1.84      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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