Frequencies for first 10,000 rows of tax_period variable in eobmfus dataset : Tax Period | Freq. Percent Cum. ------------+----------------------------------- 199612 | 1 0.01 0.01 199712 | 1 0.01 0.02 200012 | 1 0.01 0.03 200312 | 2 0.02 0.05 200412 | 2 0.02 0.07 200612 | 1 0.01 0.08 200706 | 1 0.01 0.09 200712 | 2 0.02 0.11 200806 | 1 0.01 0.12 200808 | 1 0.01 0.13 200907 | 1 0.01 0.14 200912 | 3 0.03 0.17 201006 | 1 0.01 0.18 201012 | 5 0.05 0.23 201109 | 1 0.01 0.24 201112 | 4 0.04 0.28 201203 | 1 0.01 0.29 201206 | 1 0.01 0.30 201212 | 7 0.07 0.37 201304 | 1 0.01 0.38 201308 | 1 0.01 0.39 201312 | 29 0.29 0.68 201406 | 2 0.02 0.70 201410 | 1 0.01 0.71 201412 | 15 0.15 0.86 201504 | 1 0.01 0.87 201506 | 8 0.08 0.95 201509 | 5 0.05 1.00 201510 | 1 0.01 1.01 201511 | 1 0.01 1.02 201512 | 130 1.30 2.32 201602 | 1 0.01 2.33 201603 | 6 0.06 2.39 201604 | 2 0.02 2.41 201605 | 6 0.06 2.47 201606 | 43 0.43 2.90 201607 | 7 0.07 2.97 201608 | 14 0.14 3.11 201609 | 16 0.16 3.27 201610 | 9 0.09 3.36 201612 | 240 2.40 5.76 201701 | 1 0.01 5.77 201702 | 2 0.02 5.79 201703 | 19 0.19 5.98 201704 | 12 0.12 6.10 201705 | 32 0.32 6.42 201706 | 429 4.29 10.71 201707 | 35 0.35 11.06 201708 | 78 0.78 11.84 201709 | 194 1.94 13.78 201710 | 23 0.23 14.01 201711 | 17 0.17 14.18 201712 | 3,649 36.49 50.67 201801 | 28 0.28 50.95 201802 | 29 0.29 51.24 201803 | 174 1.74 52.98 201804 | 108 1.08 54.06 201805 | 138 1.38 55.44 201806 | 1,148 11.48 66.92 201807 | 99 0.99 67.91 201808 | 161 1.61 69.52 201809 | 214 2.14 71.66 201810 | 46 0.46 72.12 201811 | 19 0.19 72.31 201812 | 1,024 10.24 82.55 201901 | 7 0.07 82.62 201902 | 7 0.07 82.69 . | 1,731 17.31 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 15 Apr 2019