Frequencies for first 10,000 rows of pct012m183 variable in sf12010860us32 dataset : 76 years | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,959 99.59 99.59 1 | 41 0.41 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 Apr 2017