Frequencies for first 10,000 rows of mrterr variable in linkpe2009psden dataset :

   Mother's |
  Residence |
   Teritory |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
         GU |      3,414       34.14       34.14
         MP |          2        0.02       34.16
         PR |      6,573       65.73       99.89
         US |          4        0.04       99.93
         XX |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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