Frequencies for first 10,000 rows of pct012n096 variable in sf12010860us33 dataset : 93 years | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,988 99.88 99.88 1 | 11 0.11 99.99 2 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 Apr 2017