Frequencies for first 10,000 rows of prov1725 variable in pos2001 dataset :

region code |      Freq.     Percent        Cum.
------------+-----------------------------------
         04 |      1,570       15.70       15.70
         06 |      1,664       16.64       32.34
         09 |      6,557       65.57       97.91
         10 |        209        2.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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