Frequencies for first 10,000 rows of death_yr variable in person dataset : Death | Date-Year | Freq. Percent Cum. ------------+----------------------------------- 0 | 5,940 59.40 59.40 90 | 4,054 40.54 99.94 91 | 6 0.06 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016