Year	current US$
1980	498540726.98328465
1981	538031914.893617
1982	452393617.0212766
1983	444680851.0638298
1984	486170212.7659575
1985	369148936.17021275
1986	423136968.0851064
1987	543611436.1702127
1988	672149734.0425532
1989	665624468.0851064
1990	707351329.787234
1991	731603723.4042553
1992	661627393.6170213
1993	798316755.3191489
1994	895620744.6808511
1995	1114481382.9787233
2006	2451276595.744681
2007	3143670212.7659574
2008	3881462765.9574466
2009	3207154255.319149
2010	3723856382.9787235
2011	4330186170.212766
2012	4568776595.74468
2013	4821462765.957447
2014	4984148936.170213
2015	5398138297.87234
2016	5835452127.6595745
2017	6564574468.085106
2018	6660701063.829787
2019	6811336702.12766
2020	6333821010.638298
2021	8071759574.468085
2022	9516514361.702127
2023	8569335106.382978