Frequencies for first 10,000 rows of tax_period variable in eobmfia dataset : Tax Period | Freq. Percent Cum. ------------+----------------------------------- 198912 | 1 0.01 0.01 199607 | 1 0.01 0.02 199612 | 1 0.01 0.03 199912 | 1 0.01 0.04 200006 | 1 0.01 0.05 200012 | 2 0.02 0.07 200106 | 1 0.01 0.08 200112 | 1 0.01 0.09 200512 | 1 0.01 0.10 200606 | 1 0.01 0.11 200612 | 5 0.05 0.16 200703 | 1 0.01 0.17 200903 | 1 0.01 0.18 200912 | 1 0.01 0.19 201006 | 1 0.01 0.20 201012 | 8 0.08 0.28 201103 | 1 0.01 0.29 201106 | 1 0.01 0.30 201112 | 10 0.10 0.40 201206 | 3 0.03 0.43 201212 | 13 0.13 0.56 201306 | 5 0.05 0.61 201312 | 42 0.42 1.03 201405 | 2 0.02 1.05 201406 | 51 0.51 1.56 201408 | 1 0.01 1.57 201409 | 1 0.01 1.58 201410 | 1 0.01 1.59 201412 | 12 0.12 1.71 201501 | 1 0.01 1.72 201503 | 1 0.01 1.73 201504 | 1 0.01 1.74 201506 | 8 0.08 1.82 201507 | 1 0.01 1.83 201509 | 4 0.04 1.87 201512 | 71 0.71 2.58 201601 | 3 0.03 2.61 201602 | 2 0.02 2.63 201604 | 3 0.03 2.66 201606 | 21 0.21 2.87 201607 | 9 0.09 2.96 201608 | 12 0.12 3.08 201609 | 5 0.05 3.13 201610 | 3 0.03 3.16 201612 | 146 1.46 4.62 201701 | 5 0.05 4.67 201702 | 1 0.01 4.68 201703 | 9 0.09 4.77 201704 | 14 0.14 4.91 201705 | 23 0.23 5.14 201706 | 249 2.49 7.63 201707 | 34 0.34 7.97 201708 | 48 0.48 8.45 201709 | 77 0.77 9.22 201710 | 33 0.33 9.55 201711 | 13 0.13 9.68 201712 | 2,821 28.21 37.89 201801 | 21 0.21 38.10 201802 | 475 4.75 42.85 201803 | 126 1.26 44.11 201804 | 71 0.71 44.82 201805 | 127 1.27 46.09 201806 | 849 8.49 54.58 201807 | 126 1.26 55.84 201808 | 171 1.71 57.55 201809 | 283 2.83 60.38 201810 | 32 0.32 60.70 201811 | 12 0.12 60.82 201812 | 991 9.91 70.73 201901 | 6 0.06 70.79 201902 | 1,687 16.87 87.66 . | 1,234 12.34 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 15 Apr 2019