Frequencies for first 10,000 rows of cntyres variable in natl1990 dataset : NCHS County | of | Residence | Freq. Percent Cum. ------------+----------------------------------- 01008 | 233 2.33 2.33 01028 | 222 2.22 4.55 01037 | 1,685 16.85 21.40 01045 | 851 8.51 29.91 01049 | 346 3.46 33.37 01051 | 800 8.00 41.37 01063 | 269 2.69 44.06 01999 | 5,383 53.83 97.89 04999 | 2 0.02 97.91 10016 | 2 0.02 97.93 10017 | 1 0.01 97.94 10036 | 1 0.01 97.95 10046 | 1 0.01 97.96 10999 | 35 0.35 98.31 11031 | 1 0.01 98.32 11060 | 1 0.01 98.33 11106 | 1 0.01 98.34 11999 | 78 0.78 99.12 16999 | 1 0.01 99.13 17087 | 1 0.01 99.14 19028 | 1 0.01 99.15 21003 | 1 0.01 99.16 21016 | 1 0.01 99.17 25024 | 2 0.02 99.19 25030 | 3 0.03 99.22 25999 | 12 0.12 99.34 26050 | 1 0.01 99.35 26999 | 1 0.01 99.36 31013 | 1 0.01 99.37 33999 | 1 0.01 99.38 34065 | 1 0.01 99.39 36999 | 1 0.01 99.40 37072 | 1 0.01 99.41 39999 | 1 0.01 99.42 41002 | 1 0.01 99.43 43999 | 51 0.51 99.94 44071 | 2 0.02 99.96 49999 | 1 0.01 99.97 51999 | 1 0.01 99.98 59ZZZ | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 3 Jan 2016