Frequencies for first 10,000 rows of mrterr variable in natlterr2005 dataset :

   Mother's |
  Residence |
Territory/P |
   osession |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
         AS |      1,720       17.20       17.20
         GU |      3,180       31.80       49.00
         MP |      1,335       13.35       62.35
         PR |      3,733       37.33       99.68
         US |         12        0.12       99.80
         XX |          6        0.06       99.86
         ZZ |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015