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

      Death |
  Date-Year |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,528       55.28       55.28
         80 |      4,465       44.65       99.93
         81 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016