Frequencies for first 10,000 rows of interchgdate variable in pos1988 dataset : Inter chg | date PG - | Program | Generated | Freq. Percent Cum. ------------+----------------------------------- | 9,398 93.98 93.98 680301 | 1 0.01 93.99 680701 | 1 0.01 94.00 690201 | 1 0.01 94.01 690401 | 1 0.01 94.02 700223 | 1 0.01 94.03 700901 | 1 0.01 94.04 701001 | 1 0.01 94.05 710101 | 1 0.01 94.06 710301 | 1 0.01 94.07 710531 | 2 0.02 94.09 710701 | 1 0.01 94.10 710801 | 1 0.01 94.11 710901 | 1 0.01 94.12 711101 | 2 0.02 94.14 720101 | 2 0.02 94.16 720115 | 1 0.01 94.17 720701 | 2 0.02 94.19 721201 | 1 0.01 94.20 730101 | 1 0.01 94.21 730501 | 1 0.01 94.22 730601 | 2 0.02 94.24 740101 | 4 0.04 94.28 740401 | 1 0.01 94.29 750101 | 2 0.02 94.31 750701 | 1 0.01 94.32 810812 | 2 0.02 94.34 811031 | 1 0.01 94.35 820318 | 3 0.03 94.38 820616 | 1 0.01 94.39 820728 | 4 0.04 94.43 820813 | 1 0.01 94.44 821005 | 1 0.01 94.45 821019 | 1 0.01 94.46 821025 | 2 0.02 94.48 821206 | 3 0.03 94.51 830127 | 163 1.63 96.14 830203 | 204 2.04 98.18 830214 | 1 0.01 98.19 830216 | 4 0.04 98.23 830315 | 1 0.01 98.24 830328 | 1 0.01 98.25 830422 | 6 0.06 98.31 830524 | 6 0.06 98.37 830614 | 2 0.02 98.39 830621 | 3 0.03 98.42 830809 | 1 0.01 98.43 830810 | 1 0.01 98.44 830824 | 1 0.01 98.45 830919 | 2 0.02 98.47 830928 | 4 0.04 98.51 831019 | 1 0.01 98.52 831207 | 1 0.01 98.53 831229 | 2 0.02 98.55 840120 | 26 0.26 98.81 840127 | 1 0.01 98.82 840202 | 5 0.05 98.87 840303 | 3 0.03 98.90 840315 | 1 0.01 98.91 840430 | 2 0.02 98.93 840504 | 3 0.03 98.96 840517 | 3 0.03 98.99 840523 | 1 0.01 99.00 840529 | 6 0.06 99.06 840712 | 2 0.02 99.08 840717 | 4 0.04 99.12 840725 | 1 0.01 99.13 840726 | 2 0.02 99.15 840802 | 1 0.01 99.16 840924 | 1 0.01 99.17 840927 | 14 0.14 99.31 840929 | 1 0.01 99.32 841003 | 6 0.06 99.38 841030 | 22 0.22 99.60 841114 | 1 0.01 99.61 841115 | 1 0.01 99.62 841123 | 2 0.02 99.64 841212 | 2 0.02 99.66 850103 | 31 0.31 99.97 850116 | 1 0.01 99.98 @@@@@@ | 2 0.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016