Frequencies for contractid variable in pdp2018 dataset : Contract ID | Freq. Percent Cum. ------------+----------------------------------- | 1 0.08 0.08 S0522 | 49 4.13 4.22 S1030 | 4 0.34 4.55 S2468 | 2 0.17 4.72 S2668 | 4 0.34 5.06 S2874 | 2 0.17 5.23 S2893 | 8 0.67 5.90 S4054 | 1 0.08 5.99 S4607 | 33 2.78 8.77 S4802 | 102 8.60 17.37 S5540 | 2 0.17 17.54 S5552 | 3 0.25 17.79 S5584 | 2 0.17 17.96 S5593 | 4 0.34 18.30 S5596 | 36 3.04 21.33 S5601 | 101 8.52 29.85 S5609 | 4 0.34 30.19 S5617 | 102 8.60 38.79 S5660 | 152 12.82 51.60 S5715 | 12 1.01 52.61 S5726 | 3 0.25 52.87 S5743 | 14 1.18 54.05 S5753 | 2 0.17 54.22 S5768 | 74 6.24 60.46 S5805 | 1 0.08 60.54 S5810 | 79 6.66 67.20 S5820 | 55 4.64 71.84 S5877 | 4 0.34 72.18 S5884 | 150 12.65 84.82 S5904 | 2 0.17 84.99 S5916 | 4 0.34 85.33 S5921 | 102 8.60 93.93 S5953 | 2 0.17 94.10 S5983 | 3 0.25 94.35 S5993 | 2 0.17 94.52 S6506 | 2 0.17 94.69 S6986 | 4 0.34 95.03 S7694 | 53 4.47 99.49 S8067 | 4 0.34 99.83 S8899 | 2 0.17 100.00 ------------+----------------------------------- Total | 1,186 100.00 by Jean Roth , jroth@nber.org , 10 Sep 2018