Frequencies for first 10,000 rows of cntocfip variable in natl1988 dataset : County of | Occurrence | (FIPS) | Freq. Percent Cum. ------------+----------------------------------- 01001 | 1 0.01 0.01 01003 | 217 2.17 2.18 01005 | 2 0.02 2.20 01007 | 1 0.01 2.21 01011 | 104 1.04 3.25 01013 | 1 0.01 3.26 01015 | 272 2.72 5.98 01017 | 168 1.68 7.66 01021 | 29 0.29 7.95 01023 | 1 0.01 7.96 01025 | 127 1.27 9.23 01027 | 23 0.23 9.46 01031 | 71 0.71 10.17 01033 | 216 2.16 12.33 01039 | 149 1.49 13.82 01041 | 48 0.48 14.30 01045 | 150 1.50 15.80 01047 | 222 2.22 18.02 01049 | 141 1.41 19.43 01051 | 3 0.03 19.46 01053 | 1 0.01 19.47 01055 | 337 3.37 22.84 01059 | 63 0.63 23.47 01063 | 45 0.45 23.92 01065 | 23 0.23 24.15 01069 | 698 6.98 31.13 01071 | 115 1.15 32.28 01073 | 1,794 17.94 50.22 01077 | 242 2.42 52.64 01081 | 326 3.26 55.90 01083 | 100 1.00 56.90 01085 | 1 0.01 56.91 01087 | 2 0.02 56.93 01089 | 428 4.28 61.21 01091 | 61 0.61 61.82 01093 | 46 0.46 62.28 01095 | 72 0.72 63.00 01097 | 927 9.27 72.27 01099 | 70 0.70 72.97 01101 | 1,255 12.55 85.52 01103 | 353 3.53 89.05 01109 | 81 0.81 89.86 01111 | 34 0.34 90.20 01113 | 75 0.75 90.95 01115 | 16 0.16 91.11 01117 | 1 0.01 91.12 01121 | 198 1.98 93.10 01123 | 64 0.64 93.74 01125 | 488 4.88 98.62 01127 | 138 1.38 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 3 Jan 2016