Frequencies for first 10,000 rows of pct012e191 variable in sf12000860us20 dataset : 84 years | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,975 99.75 99.75 1 | 25 0.25 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2017