Frequencies for first 10,000 rows of prov1725 variable in posclia2009 dataset :

region code |      Freq.     Percent        Cum.
------------+-----------------------------------
         01 |          1        0.01        0.01
         02 |          1        0.01        0.02
         04 |      6,386       63.86       63.88
         05 |          5        0.05       63.93
         06 |         17        0.17       64.10
         07 |          2        0.02       64.12
         08 |          3        0.03       64.15
         09 |      2,778       27.78       91.93
         10 |        807        8.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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