Frequencies for first 10,000 rows of tax_period variable in eobmfks dataset : Tax Period | Freq. Percent Cum. ------------+----------------------------------- 199707 | 1 0.01 0.01 199712 | 3 0.03 0.04 199806 | 2 0.02 0.06 199807 | 1 0.01 0.07 199812 | 3 0.03 0.10 199912 | 1 0.01 0.11 200007 | 1 0.01 0.12 200106 | 1 0.01 0.13 200205 | 1 0.01 0.14 200206 | 1 0.01 0.15 200412 | 1 0.01 0.16 200612 | 6 0.06 0.22 200706 | 3 0.03 0.25 200709 | 1 0.01 0.26 200904 | 1 0.01 0.27 200906 | 3 0.03 0.30 200912 | 3 0.03 0.33 201012 | 7 0.07 0.40 201106 | 3 0.03 0.43 201112 | 9 0.09 0.52 201206 | 1 0.01 0.53 201212 | 14 0.14 0.67 201305 | 1 0.01 0.68 201306 | 3 0.03 0.71 201312 | 48 0.48 1.19 201401 | 1 0.01 1.20 201403 | 1 0.01 1.21 201404 | 1 0.01 1.22 201405 | 1 0.01 1.23 201406 | 24 0.24 1.47 201407 | 1 0.01 1.48 201412 | 14 0.14 1.62 201501 | 1 0.01 1.63 201505 | 1 0.01 1.64 201506 | 3 0.03 1.67 201509 | 2 0.02 1.69 201510 | 2 0.02 1.71 201511 | 1 0.01 1.72 201512 | 116 1.16 2.88 201601 | 2 0.02 2.90 201602 | 1 0.01 2.91 201603 | 3 0.03 2.94 201604 | 1 0.01 2.95 201605 | 5 0.05 3.00 201606 | 28 0.28 3.28 201607 | 6 0.06 3.34 201608 | 9 0.09 3.43 201609 | 9 0.09 3.52 201610 | 2 0.02 3.54 201611 | 2 0.02 3.56 201612 | 233 2.33 5.89 201701 | 2 0.02 5.91 201702 | 4 0.04 5.95 201703 | 6 0.06 6.01 201704 | 10 0.10 6.11 201705 | 27 0.27 6.38 201706 | 290 2.90 9.28 201707 | 29 0.29 9.57 201708 | 34 0.34 9.91 201709 | 96 0.96 10.87 201710 | 20 0.20 11.07 201711 | 19 0.19 11.26 201712 | 3,820 38.20 49.46 201801 | 24 0.24 49.70 201802 | 34 0.34 50.04 201803 | 217 2.17 52.21 201804 | 91 0.91 53.12 201805 | 169 1.69 54.81 201806 | 1,000 10.00 64.81 201807 | 109 1.09 65.90 201808 | 105 1.05 66.95 201809 | 154 1.54 68.49 201810 | 31 0.31 68.80 201811 | 9 0.09 68.89 201812 | 1,093 10.93 79.82 201901 | 11 0.11 79.93 201902 | 5 0.05 79.98 . | 2,002 20.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 15 Apr 2019