Frequencies for first 10,000 rows of pct012d208 variable in sf12010860us23 dataset : 105 to 109 | years | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,979 99.79 99.79 1 | 17 0.17 99.96 2 | 4 0.04 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 Apr 2017