Frequencies for contractid variable in pdp2019 dataset : Contract ID | Freq. Percent Cum. ------------+----------------------------------- | 1 0.07 0.07 S1030 | 6 0.44 0.51 S1894 | 1 0.07 0.58 S2468 | 2 0.15 0.73 S2668 | 4 0.29 1.02 S2874 | 2 0.15 1.17 S2893 | 8 0.58 1.75 S4607 | 6 0.44 2.19 S4802 | 153 11.17 13.36 S5540 | 2 0.15 13.50 S5552 | 3 0.22 13.72 S5584 | 3 0.22 13.94 S5593 | 4 0.29 14.23 S5596 | 24 1.75 15.99 S5601 | 151 11.02 27.01 S5609 | 4 0.29 27.30 S5617 | 153 11.17 38.47 S5660 | 152 11.09 49.56 S5715 | 12 0.88 50.44 S5726 | 2 0.15 50.58 S5743 | 14 1.02 51.61 S5753 | 2 0.15 51.75 S5768 | 51 3.72 55.47 S5805 | 1 0.07 55.55 S5810 | 102 7.45 62.99 S5820 | 55 4.01 67.01 S5884 | 150 10.95 77.96 S5904 | 3 0.22 78.18 S5916 | 4 0.29 78.47 S5921 | 102 7.45 85.91 S5953 | 2 0.15 86.06 S5983 | 3 0.22 86.28 S5993 | 2 0.15 86.42 S6506 | 3 0.22 86.64 S6986 | 26 1.90 88.54 S7126 | 100 7.30 95.84 S7694 | 53 3.87 99.71 S8067 | 4 0.29 100.00 ------------+----------------------------------- Total | 1,370 100.00 by Jean Roth , jroth@nber.org , 15 Feb 2019