Frequencies for first 10,000 rows of mbstate_rec variable in natlterr2015 dataset :

   Mother's |
 Nativity 1 |
Born in the |
U.S. (50 US |
    States) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        678        6.78        6.78
          2 |      8,731       87.31       94.09
          3 |        591        5.91      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Oct 2016