Frequencies for first 10,000 rows of tax_period variable in eobmftn dataset : Tax Period | Freq. Percent Cum. ------------+----------------------------------- 199606 | 1 0.01 0.01 200112 | 1 0.01 0.02 200206 | 2 0.02 0.04 200212 | 1 0.01 0.05 200406 | 2 0.02 0.07 200412 | 1 0.01 0.08 200512 | 1 0.01 0.09 200612 | 1 0.01 0.10 200712 | 1 0.01 0.11 200806 | 3 0.03 0.14 200812 | 2 0.02 0.16 200906 | 1 0.01 0.17 200907 | 1 0.01 0.18 200912 | 1 0.01 0.19 201006 | 1 0.01 0.20 201012 | 1 0.01 0.21 201106 | 6 0.06 0.27 201112 | 3 0.03 0.30 201206 | 1 0.01 0.31 201212 | 4 0.04 0.35 201306 | 1 0.01 0.36 201312 | 3 0.03 0.39 201406 | 7 0.07 0.46 201411 | 1 0.01 0.47 201412 | 10 0.10 0.57 201505 | 2 0.02 0.59 201506 | 1 0.01 0.60 201507 | 1 0.01 0.61 201509 | 1 0.01 0.62 201510 | 1 0.01 0.63 201511 | 3 0.03 0.66 201512 | 120 1.20 1.86 201601 | 3 0.03 1.89 201602 | 1 0.01 1.90 201603 | 3 0.03 1.93 201604 | 3 0.03 1.96 201605 | 3 0.03 1.99 201606 | 37 0.37 2.36 201607 | 8 0.08 2.44 201608 | 6 0.06 2.50 201609 | 13 0.13 2.63 201610 | 2 0.02 2.65 201612 | 248 2.48 5.13 201701 | 6 0.06 5.19 201702 | 2 0.02 5.21 201703 | 7 0.07 5.28 201704 | 17 0.17 5.45 201705 | 30 0.30 5.75 201706 | 258 2.58 8.33 201707 | 31 0.31 8.64 201708 | 26 0.26 8.90 201709 | 59 0.59 9.49 201710 | 15 0.15 9.64 201711 | 13 0.13 9.77 201712 | 3,131 31.31 41.08 201801 | 25 0.25 41.33 201802 | 14 0.14 41.47 201803 | 179 1.79 43.26 201804 | 58 0.58 43.84 201805 | 121 1.21 45.05 201806 | 1,052 10.52 55.57 201807 | 73 0.73 56.30 201808 | 47 0.47 56.77 201809 | 96 0.96 57.73 201810 | 16 0.16 57.89 201811 | 7 0.07 57.96 201812 | 1,012 10.12 68.08 201901 | 4 0.04 68.12 201902 | 10 0.10 68.22 . | 3,178 31.78 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 15 Apr 2019