Frequencies for first 10,000 rows of contractid variable in planreport2009 dataset : Contract ID | Freq. Percent Cum. ------------+----------------------------------- | 6 0.06 0.06 H0084 | 24 0.24 0.30 H0104 | 1,838 18.38 18.68 H0150 | 953 9.53 28.21 H0151 | 430 4.30 32.51 H0154 | 918 9.18 41.69 H0540 | 258 2.58 44.27 H0846 | 106 1.06 45.33 H1340 | 234 2.34 47.67 H1681 | 264 2.64 50.31 H1804 | 274 2.74 53.05 H2012 | 190 1.90 54.95 H2762 | 444 4.44 59.39 H2944 | 224 2.24 61.63 H3415 | 1 0.01 61.64 H4074 | 12 0.12 61.76 H5006 | 146 1.46 63.22 H5214 | 38 0.38 63.60 H5227 | 176 1.76 65.36 H5301 | 10 0.10 65.46 H5322 | 6 0.06 65.52 H5421 | 804 8.04 73.56 H5435 | 114 1.14 74.70 H5521 | 12 0.12 74.82 H5525 | 8 0.08 74.90 H5698 | 355 3.55 78.45 H6609 | 62 0.62 79.07 H7206 | 50 0.50 79.57 H8145 | 168 1.68 81.25 R5826 | 1,415 14.15 95.40 S0128 | 4 0.04 95.44 S0522 | 6 0.06 95.50 S1030 | 14 0.14 95.64 S2505 | 7 0.07 95.71 S4802 | 6 0.06 95.77 S5557 | 1 0.01 95.78 S5597 | 8 0.08 95.86 S5601 | 27 0.27 96.13 S5617 | 34 0.34 96.47 S5644 | 10 0.10 96.57 S5660 | 32 0.32 96.89 S5670 | 10 0.10 96.99 S5674 | 10 0.10 97.09 S5678 | 16 0.16 97.25 S5755 | 23 0.23 97.48 S5768 | 23 0.23 97.71 S5803 | 20 0.20 97.91 S5810 | 34 0.34 98.25 S5820 | 14 0.14 98.39 S5884 | 39 0.39 98.78 S5917 | 1 0.01 98.79 S5921 | 24 0.24 99.03 S5932 | 12 0.12 99.15 S5960 | 21 0.21 99.36 S5967 | 28 0.28 99.64 S5998 | 4 0.04 99.68 S7694 | 24 0.24 99.92 S9579 | 8 0.08 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016