Frequencies for first 10,000 rows of tax_period variable in eobmfoh dataset : Tax Period | Freq. Percent Cum. ------------+----------------------------------- 199806 | 1 0.01 0.01 199812 | 1 0.01 0.02 199906 | 1 0.01 0.03 199912 | 1 0.01 0.04 200106 | 2 0.02 0.06 200212 | 1 0.01 0.07 200406 | 3 0.03 0.10 200506 | 1 0.01 0.11 200606 | 4 0.04 0.15 200612 | 3 0.03 0.18 200705 | 1 0.01 0.19 200706 | 2 0.02 0.21 200806 | 2 0.02 0.23 200808 | 1 0.01 0.24 200812 | 1 0.01 0.25 200906 | 7 0.07 0.32 201006 | 5 0.05 0.37 201012 | 5 0.05 0.42 201106 | 3 0.03 0.45 201112 | 2 0.02 0.47 201206 | 1 0.01 0.48 201212 | 6 0.06 0.54 201306 | 1 0.01 0.55 201312 | 13 0.13 0.68 201406 | 7 0.07 0.75 201408 | 14 0.14 0.89 201411 | 1 0.01 0.90 201412 | 15 0.15 1.05 201505 | 2 0.02 1.07 201506 | 6 0.06 1.13 201509 | 5 0.05 1.18 201510 | 2 0.02 1.20 201511 | 2 0.02 1.22 201512 | 78 0.78 2.00 201601 | 1 0.01 2.01 201602 | 2 0.02 2.03 201603 | 7 0.07 2.10 201604 | 4 0.04 2.14 201605 | 14 0.14 2.28 201606 | 46 0.46 2.74 201607 | 4 0.04 2.78 201608 | 6 0.06 2.84 201609 | 6 0.06 2.90 201610 | 4 0.04 2.94 201611 | 3 0.03 2.97 201612 | 183 1.83 4.80 201701 | 3 0.03 4.83 201702 | 6 0.06 4.89 201703 | 6 0.06 4.95 201704 | 12 0.12 5.07 201705 | 66 0.66 5.73 201706 | 337 3.37 9.10 201707 | 38 0.38 9.48 201708 | 68 0.68 10.16 201709 | 64 0.64 10.80 201710 | 32 0.32 11.12 201711 | 26 0.26 11.38 201712 | 3,856 38.56 49.94 201801 | 15 0.15 50.09 201802 | 21 0.21 50.30 201803 | 92 0.92 51.22 201804 | 111 1.11 52.33 201805 | 538 5.38 57.71 201806 | 1,149 11.49 69.20 201807 | 118 1.18 70.38 201808 | 639 6.39 76.77 201809 | 162 1.62 78.39 201810 | 105 1.05 79.44 201811 | 59 0.59 80.03 201812 | 849 8.49 88.52 201901 | 3 0.03 88.55 201902 | 4 0.04 88.59 . | 1,141 11.41 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 15 Apr 2019