Frequencies for first 10,000 rows of tax_period variable in eobmfmd dataset : Tax Period | Freq. Percent Cum. ------------+----------------------------------- 199712 | 2 0.02 0.02 200011 | 1 0.01 0.03 200103 | 1 0.01 0.04 200412 | 1 0.01 0.05 200505 | 1 0.01 0.06 200712 | 2 0.02 0.08 200912 | 2 0.02 0.10 201012 | 3 0.03 0.13 201112 | 3 0.03 0.16 201206 | 1 0.01 0.17 201212 | 3 0.03 0.20 201306 | 1 0.01 0.21 201312 | 15 0.15 0.36 201403 | 1 0.01 0.37 201405 | 1 0.01 0.38 201406 | 3 0.03 0.41 201407 | 2 0.02 0.43 201408 | 3 0.03 0.46 201409 | 2 0.02 0.48 201411 | 1 0.01 0.49 201412 | 24 0.24 0.73 201502 | 1 0.01 0.74 201505 | 1 0.01 0.75 201506 | 3 0.03 0.78 201507 | 1 0.01 0.79 201509 | 6 0.06 0.85 201510 | 1 0.01 0.86 201512 | 159 1.59 2.45 201602 | 1 0.01 2.46 201604 | 3 0.03 2.49 201605 | 5 0.05 2.54 201606 | 53 0.53 3.07 201607 | 5 0.05 3.12 201608 | 6 0.06 3.18 201609 | 9 0.09 3.27 201610 | 5 0.05 3.32 201611 | 1 0.01 3.33 201612 | 294 2.94 6.27 201701 | 2 0.02 6.29 201702 | 1 0.01 6.30 201703 | 9 0.09 6.39 201704 | 12 0.12 6.51 201705 | 15 0.15 6.66 201706 | 467 4.67 11.33 201707 | 31 0.31 11.64 201708 | 42 0.42 12.06 201709 | 76 0.76 12.82 201710 | 21 0.21 13.03 201711 | 16 0.16 13.19 201712 | 4,041 40.41 53.60 201801 | 14 0.14 53.74 201802 | 30 0.30 54.04 201803 | 138 1.38 55.42 201804 | 82 0.82 56.24 201805 | 75 0.75 56.99 201806 | 1,206 12.06 69.05 201807 | 60 0.60 69.65 201808 | 67 0.67 70.32 201809 | 91 0.91 71.23 201810 | 24 0.24 71.47 201811 | 9 0.09 71.56 201812 | 1,053 10.53 82.09 201901 | 11 0.11 82.20 201902 | 15 0.15 82.35 . | 1,765 17.65 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 15 Apr 2019