Frequencies for contractid variable in pdp2012 dataset : Contract ID | Freq. Percent Cum. ------------+----------------------------------- S0043 | 3 0.19 0.19 S0197 | 1 0.06 0.25 S0223 | 2 0.12 0.37 S1030 | 4 0.25 0.62 S1480 | 2 0.12 0.75 S2321 | 4 0.25 1.00 S2468 | 3 0.19 1.19 S2505 | 5 0.31 1.50 S2874 | 2 0.12 1.62 S2893 | 8 0.50 2.12 S3440 | 1 0.06 2.18 S3521 | 2 0.12 2.31 S4219 | 1 0.06 2.37 S4802 | 14 0.87 3.24 S5540 | 2 0.12 3.37 S5552 | 3 0.19 3.56 S5555 | 2 0.12 3.68 S5569 | 2 0.12 3.81 S5580 | 2 0.12 3.93 S5584 | 2 0.12 4.05 S5593 | 4 0.25 4.30 S5596 | 36 2.25 6.55 S5601 | 99 6.18 12.73 S5609 | 4 0.25 12.98 S5617 | 79 4.93 17.90 S5660 | 86 5.36 23.27 S5670 | 25 1.56 24.83 S5674 | 25 1.56 26.39 S5678 | 100 6.24 32.63 S5715 | 8 0.50 33.13 S5726 | 3 0.19 33.31 S5743 | 14 0.87 34.19 S5753 | 2 0.12 34.31 S5755 | 97 6.05 40.36 S5766 | 6 0.37 40.74 S5768 | 98 6.11 46.85 S5775 | 2 0.12 46.97 S5795 | 2 0.12 47.10 S5803 | 102 6.36 53.46 S5805 | 1 0.06 53.52 S5810 | 102 6.36 59.89 S5820 | 55 3.43 63.32 S5825 | 2 0.12 63.44 S5840 | 2 0.12 63.57 S5857 | 1 0.06 63.63 S5877 | 4 0.25 63.88 S5884 | 142 8.86 72.74 S5904 | 2 0.12 72.86 S5907 | 2 0.12 72.99 S5916 | 4 0.25 73.24 S5921 | 51 3.18 76.42 S5932 | 51 3.18 79.60 S5937 | 2 0.12 79.73 S5953 | 2 0.12 79.85 S5960 | 73 4.55 84.40 S5966 | 1 0.06 84.47 S5967 | 100 6.24 90.70 S5983 | 1 0.06 90.77 S5993 | 2 0.12 90.89 S5998 | 39 2.43 93.33 S6506 | 1 0.06 93.39 S7694 | 102 6.36 99.75 S8067 | 4 0.25 100.00 ------------+----------------------------------- Total | 1,603 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016