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

   Mother's |
  County of |
  Residence |
     (FIPS) |
Territory/P |
  ossession |
       U;R  |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,255       62.55       62.55
         21 |        217        2.17       64.72
         25 |        132        1.32       66.04
         31 |        137        1.37       67.41
         97 |         75        0.75       68.16
        113 |        201        2.01       70.17
        127 |        377        3.77       73.94
        999 |      2,606       26.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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