Frequencies for first 10,000 rows of P035E013 variable in sf12000860us11 dataset : 6 to 17 | years only | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,824 98.24 98.24 1 | 163 1.63 99.87 2 | 8 0.08 99.95 3 | 4 0.04 99.99 4 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 Apr 2017