Frequencies for first 10,000 rows of dob_yy variable in natlterr2007 dataset :

 Birth Year |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
       2007 |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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