Year	current US$
1984	256259150.634832
1985	268839524.50099
1986	293102268.188641
1987	294312295.786395
1988	303810433.117474
1989	316424082.467247
1990	299883305.503738
1991	184813701.698426
1992	117103326.949065
1993	176183759.048055
1994	242617459.188743
1995	285245817.617663
1996	351343654.720325
1997	269026480.486686
1998	273675198.909911
1999	329232194.337629
2000	358889011.801568
2001	404870045.607621
2002	452607884.28736
2003	578536073.614442
2004	755487112.645969
2005	835807726.478582
2006	901103484.46098
2007	1289780176.63886
2008	1555960260.24919
2009	1496552122.43077
2010	1492162488.1581
2011	1774974405.1795
2012	1771663011.08105
2013	1828547504.14839
2014	1917705974.83978
2015	1937485505.76301
2016	1993800315.95227
2017	2217161476.9206
2018	2534299257.50505
2019	2586773515.81174
2020	2540716210.12031
2021	3064374259.38694