Frequencies for contractid variable in pdp2013 dataset : Contract ID | Freq. Percent Cum. ------------+----------------------------------- S0043 | 3 0.23 0.23 S0128 | 50 3.77 3.99 S0197 | 1 0.08 4.07 S0223 | 2 0.15 4.22 S1030 | 4 0.30 4.52 S1140 | 1 0.08 4.59 S2321 | 4 0.30 4.89 S2468 | 2 0.15 5.05 S2505 | 7 0.53 5.57 S2874 | 2 0.15 5.72 S2893 | 8 0.60 6.33 S3440 | 2 0.15 6.48 S3521 | 1 0.08 6.55 S4219 | 1 0.08 6.63 S4802 | 14 1.05 7.68 S5540 | 2 0.15 7.83 S5552 | 3 0.23 8.06 S5569 | 2 0.15 8.21 S5580 | 2 0.15 8.36 S5584 | 2 0.15 8.51 S5593 | 4 0.30 8.81 S5596 | 36 2.71 11.52 S5609 | 4 0.30 11.82 S5617 | 79 5.95 17.77 S5660 | 83 6.25 24.02 S5670 | 25 1.88 25.90 S5674 | 25 1.88 27.79 S5715 | 8 0.60 28.39 S5726 | 3 0.23 28.61 S5743 | 14 1.05 29.67 S5753 | 2 0.15 29.82 S5755 | 98 7.38 37.20 S5766 | 6 0.45 37.65 S5768 | 98 7.38 45.03 S5775 | 2 0.15 45.18 S5795 | 2 0.15 45.33 S5805 | 1 0.08 45.41 S5810 | 101 7.61 53.01 S5820 | 55 4.14 57.15 S5840 | 2 0.15 57.30 S5877 | 4 0.30 57.61 S5884 | 142 10.69 68.30 S5904 | 2 0.15 68.45 S5907 | 2 0.15 68.60 S5916 | 4 0.30 68.90 S5921 | 95 7.15 76.05 S5932 | 51 3.84 79.89 S5937 | 2 0.15 80.05 S5953 | 2 0.15 80.20 S5960 | 46 3.46 83.66 S5966 | 1 0.08 83.73 S5967 | 100 7.53 91.27 S5983 | 1 0.08 91.34 S5993 | 2 0.15 91.49 S6506 | 1 0.08 91.57 S7694 | 102 7.68 99.25 S8067 | 4 0.30 99.55 S9014 | 6 0.45 100.00 ------------+----------------------------------- Total | 1,328 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016