Frequencies for first 10,000 rows of tax_period variable in eobmfma dataset : Tax Period | Freq. Percent Cum. ------------+----------------------------------- 199409 | 1 0.01 0.01 199512 | 1 0.01 0.02 199609 | 7 0.07 0.09 199712 | 1 0.01 0.10 199812 | 2 0.02 0.12 199906 | 1 0.01 0.13 199909 | 3 0.03 0.16 199912 | 1 0.01 0.17 200012 | 3 0.03 0.20 200212 | 2 0.02 0.22 200306 | 3 0.03 0.25 200312 | 2 0.02 0.27 200412 | 2 0.02 0.29 200509 | 1 0.01 0.30 200512 | 1 0.01 0.31 200609 | 1 0.01 0.32 200612 | 6 0.06 0.38 200708 | 1 0.01 0.39 200712 | 1 0.01 0.40 200809 | 3 0.03 0.43 200812 | 3 0.03 0.46 200909 | 2 0.02 0.48 200912 | 1 0.01 0.49 201006 | 1 0.01 0.50 201012 | 14 0.14 0.64 201106 | 10 0.10 0.74 201108 | 1 0.01 0.75 201109 | 3 0.03 0.78 201112 | 12 0.12 0.90 201203 | 2 0.02 0.92 201206 | 129 1.29 2.21 201207 | 1 0.01 2.22 201209 | 1 0.01 2.23 201212 | 15 0.15 2.38 201309 | 3 0.03 2.41 201312 | 59 0.59 3.00 201405 | 2 0.02 3.02 201406 | 5 0.05 3.07 201408 | 2 0.02 3.09 201409 | 2 0.02 3.11 201412 | 11 0.11 3.22 201506 | 7 0.07 3.29 201508 | 1 0.01 3.30 201509 | 12 0.12 3.42 201510 | 4 0.04 3.46 201512 | 70 0.70 4.16 201602 | 2 0.02 4.18 201603 | 7 0.07 4.25 201604 | 5 0.05 4.30 201605 | 6 0.06 4.36 201606 | 51 0.51 4.87 201607 | 3 0.03 4.90 201608 | 15 0.15 5.05 201609 | 23 0.23 5.28 201610 | 6 0.06 5.34 201611 | 2 0.02 5.36 201612 | 118 1.18 6.54 201701 | 3 0.03 6.57 201702 | 6 0.06 6.63 201703 | 12 0.12 6.75 201704 | 17 0.17 6.92 201705 | 52 0.52 7.44 201706 | 871 8.71 16.15 201707 | 40 0.40 16.55 201708 | 180 1.80 18.35 201709 | 353 3.53 21.88 201710 | 78 0.78 22.66 201711 | 42 0.42 23.08 201712 | 3,069 30.69 53.77 201801 | 33 0.33 54.10 201802 | 48 0.48 54.58 201803 | 238 2.38 56.96 201804 | 148 1.48 58.44 201805 | 157 1.57 60.01 201806 | 1,618 16.18 76.19 201807 | 111 1.11 77.30 201808 | 303 3.03 80.33 201809 | 264 2.64 82.97 201810 | 58 0.58 83.55 201811 | 15 0.15 83.70 201812 | 440 4.40 88.10 201901 | 3 0.03 88.13 201902 | 7 0.07 88.20 . | 1,180 11.80 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 15 Apr 2019