Frequencies for first 10,000 rows of pct017a050 variable in sf12000860us33 dataset : Military | quarters | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,987 99.87 99.87 1 | 6 0.06 99.93 2 | 2 0.02 99.95 4 | 1 0.01 99.96 7 | 1 0.01 99.97 11 | 1 0.01 99.98 20 | 1 0.01 99.99 43 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 Apr 2017