Frequencies for first 10,000 rows of death_yr variable in person dataset :

   death_yr |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,874       58.74       58.74
       2003 |      4,104       41.04       99.78
       2004 |          5        0.05       99.83
       9999 |         17        0.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016