Frequencies for first 10,000 rows of prov1725 variable in pos1992 dataset :

region code |      Freq.     Percent        Cum.
------------+-----------------------------------
         04 |      1,294       12.94       12.94
         06 |      1,249       12.49       25.43
         08 |        810        8.10       33.53
         09 |      6,499       64.99       98.52
         10 |        148        1.48      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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