Frequencies for first 10,000 rows of contractid variable in ma2007 dataset : Contract ID | Freq. Percent Cum. ------------+----------------------------------- H0104 | 76 0.76 0.76 H0150 | 99 0.99 1.75 H0151 | 42 0.42 2.17 H0154 | 26 0.26 2.43 H0302 | 1 0.01 2.44 H0303 | 13 0.13 2.57 H0307 | 2 0.02 2.59 H0316 | 8 0.08 2.67 H0317 | 2 0.02 2.69 H0318 | 2 0.02 2.71 H0320 | 6 0.06 2.77 H0322 | 3 0.03 2.80 H0351 | 12 0.12 2.92 H0354 | 2 0.02 2.94 H0401 | 4 0.04 2.98 H0504 | 7 0.07 3.05 H0523 | 14 0.14 3.19 H0524 | 30 0.30 3.49 H0532 | 3 0.03 3.52 H0540 | 709 7.09 10.61 H0543 | 53 0.53 11.14 H0544 | 6 0.06 11.20 H0545 | 3 0.03 11.23 H0562 | 39 0.39 11.62 H0564 | 10 0.10 11.72 H0571 | 1 0.01 11.73 H0602 | 372 3.72 15.45 H0609 | 39 0.39 15.84 H0623 | 9 0.09 15.93 H0624 | 2 0.02 15.95 H0630 | 39 0.39 16.34 H0712 | 9 0.09 16.43 H0752 | 1 0.01 16.44 H0755 | 40 0.40 16.84 H0846 | 523 5.23 22.07 H1013 | 5 0.05 22.12 H1016 | 2 0.02 22.14 H1019 | 10 0.10 22.24 H1026 | 3 0.03 22.27 H1032 | 56 0.56 22.83 H1034 | 21 0.21 23.04 H1035 | 6 0.06 23.10 H1036 | 42 0.42 23.52 H1045 | 3 0.03 23.55 H1076 | 8 0.08 23.63 H1080 | 18 0.18 23.81 H1099 | 6 0.06 23.87 H1109 | 15 0.15 24.02 H1110 | 1 0.01 24.03 H1111 | 8 0.08 24.11 H1112 | 9 0.09 24.20 H1170 | 12 0.12 24.32 H1230 | 2 0.02 24.34 H1251 | 12 0.12 24.46 H1340 | 291 2.91 27.37 H1689 | 4 0.04 27.41 H1804 | 1,118 11.18 38.59 H2408 | 4 0.04 38.63 H2905 | 3 0.03 38.66 H3333 | 32 0.32 38.98 H3815 | 2 0.02 39.00 H4204 | 159 1.59 40.59 H4206 | 54 0.54 41.13 H4449 | 693 6.93 48.06 H4577 | 255 2.55 50.61 H5006 | 537 5.37 55.98 H5214 | 7 0.07 56.05 H5227 | 6 0.06 56.11 H5301 | 7 0.07 56.18 H5302 | 8 0.08 56.26 H5402 | 92 0.92 57.18 H5404 | 66 0.66 57.84 H5407 | 27 0.27 58.11 H5410 | 1 0.01 58.12 H5411 | 2 0.02 58.14 H5414 | 12 0.12 58.26 H5415 | 2 0.02 58.28 H5417 | 2 0.02 58.30 H5418 | 2 0.02 58.32 H5419 | 20 0.20 58.52 H5420 | 4 0.04 58.56 H5421 | 1,752 17.52 76.08 H5422 | 16 0.16 76.24 H5425 | 4 0.04 76.28 H5426 | 24 0.24 76.52 H5427 | 20 0.20 76.72 H5429 | 23 0.23 76.95 H5431 | 3 0.03 76.98 H5434 | 4 0.04 77.02 H5435 | 243 2.43 79.45 H5436 | 2 0.02 79.47 H5437 | 1 0.01 79.48 H5439 | 1 0.01 79.49 H5500 | 7 0.07 79.56 H5532 | 6 0.06 79.62 H5578 | 10 0.10 79.72 H5594 | 4 0.04 79.76 H5608 | 1 0.01 79.77 H5609 | 1 0.01 79.78 H5611 | 13 0.13 79.91 H5649 | 1 0.01 79.92 H5679 | 6 0.06 79.98 H5696 | 14 0.14 80.12 H5698 | 27 0.27 80.39 H5700 | 52 0.52 80.91 H5729 | 64 0.64 81.55 H5736 | 12 0.12 81.67 H5769 | 58 0.58 82.25 H5793 | 9 0.09 82.34 H5811 | 2 0.02 82.36 H5813 | 4 0.04 82.40 H5820 | 241 2.41 84.81 H5849 | 75 0.75 85.56 H5850 | 10 0.10 85.66 H5854 | 9 0.09 85.75 H5908 | 1 0.01 85.76 H5909 | 7 0.07 85.83 H5928 | 1 0.01 85.84 H5936 | 13 0.13 85.97 H5938 | 8 0.08 86.05 H5942 | 3 0.03 86.08 H5948 | 1 0.01 86.09 H5969 | 1 0.01 86.10 H5985 | 1 0.01 86.11 H5996 | 66 0.66 86.77 H6421 | 3 0.03 86.80 H7289 | 245 2.45 89.25 H9011 | 2 0.02 89.27 H9016 | 3 0.03 89.30 R3175 | 2 0.02 89.32 R5287 | 136 1.36 90.68 R5553 | 320 3.20 93.88 R5595 | 12 0.12 94.00 R5826 | 457 4.57 98.57 R5863 | 17 0.17 98.74 R9943 | 126 1.26 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 14 Apr 2016