Frequencies for first 10,000 rows of prov1725 variable in pos1997 dataset :

region code |      Freq.     Percent        Cum.
------------+-----------------------------------
         04 |      1,388       13.88       13.88
         06 |      1,469       14.69       28.57
         08 |        419        4.19       32.76
         09 |      6,529       65.29       98.05
         10 |        195        1.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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