Frequencies for first 10,000 rows of prov1725 variable in pos1991 dataset :

region code |      Freq.     Percent        Cum.
------------+-----------------------------------
         04 |      1,236       12.36       12.36
         06 |      1,217       12.17       24.53
         08 |        821        8.21       32.74
         09 |      6,581       65.81       98.55
         10 |        145        1.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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