Frequencies for first 10,000 rows of prov1725 variable in pos2004 dataset :

region code |      Freq.     Percent        Cum.
------------+-----------------------------------
         04 |      1,722       17.22       17.22
         06 |      1,791       17.91       35.13
         09 |      6,258       62.58       97.71
         10 |        229        2.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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