Frequencies for contractid variable in pdp2010 dataset : Contract ID | Freq. Percent Cum. ------------+----------------------------------- S0043 | 3 0.12 0.12 S0197 | 3 0.12 0.25 S0655 | 12 0.50 0.75 S1030 | 4 0.17 0.91 S2321 | 4 0.17 1.08 S2468 | 2 0.08 1.16 S2505 | 5 0.21 1.37 S2770 | 2 0.08 1.45 S2873 | 3 0.12 1.58 S2874 | 2 0.08 1.66 S2893 | 12 0.50 2.16 S3389 | 2 0.08 2.24 S3440 | 2 0.08 2.32 S3521 | 2 0.08 2.41 S4248 | 2 0.08 2.49 S4802 | 50 2.07 4.56 S5540 | 2 0.08 4.65 S5552 | 3 0.12 4.77 S5555 | 2 0.08 4.85 S5557 | 27 1.12 5.98 S5566 | 3 0.12 6.10 S5569 | 2 0.08 6.18 S5580 | 2 0.08 6.27 S5584 | 2 0.08 6.35 S5585 | 1 0.04 6.39 S5593 | 6 0.25 6.64 S5596 | 36 1.49 8.13 S5597 | 96 3.98 12.12 S5601 | 156 6.47 18.59 S5609 | 4 0.17 18.76 S5617 | 153 6.35 25.10 S5644 | 102 4.23 29.34 S5660 | 153 6.35 35.68 S5670 | 75 3.11 38.80 S5674 | 75 3.11 41.91 S5678 | 102 4.23 46.14 S5715 | 9 0.37 46.51 S5726 | 3 0.12 46.64 S5741 | 2 0.08 46.72 S5743 | 21 0.87 47.59 S5753 | 3 0.12 47.72 S5755 | 100 4.15 51.87 S5766 | 6 0.25 52.12 S5768 | 100 4.15 56.27 S5775 | 3 0.12 56.39 S5795 | 3 0.12 56.51 S5803 | 158 6.56 63.07 S5805 | 1 0.04 63.11 S5810 | 153 6.35 69.46 S5820 | 65 2.70 72.16 S5825 | 3 0.12 72.28 S5840 | 2 0.08 72.37 S5857 | 1 0.04 72.41 S5860 | 1 0.04 72.45 S5877 | 4 0.17 72.61 S5884 | 150 6.22 78.84 S5904 | 3 0.12 78.96 S5907 | 2 0.08 79.05 S5915 | 3 0.12 79.17 S5916 | 4 0.17 79.34 S5917 | 7 0.29 79.63 S5921 | 102 4.23 83.86 S5932 | 51 2.12 85.98 S5937 | 1 0.04 86.02 S5953 | 2 0.08 86.10 S5954 | 3 0.12 86.22 S5960 | 73 3.03 89.25 S5966 | 1 0.04 89.29 S5967 | 100 4.15 93.44 S5983 | 3 0.12 93.57 S5993 | 2 0.08 93.65 S5998 | 44 1.83 95.48 S7694 | 100 4.15 99.63 S8067 | 6 0.25 99.88 S8201 | 1 0.04 99.92 S8475 | 2 0.08 100.00 ------------+----------------------------------- Total | 2,410 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016