Year	current US$
1980	3813478376.2271156
1981	4547340159.574468
1982	4337766223.404255
1983	3611169946.808511
1984	3768351063.8297873
1985	3716489627.6595745
1986	3013031914.893617
1987	3472340425.5319147
1988	3529787234.042553
1989	3811169946.808511
1990	4887765691.489362
1991	3923935904.255319
1992	4009042287.2340426
1993	4361702127.6595745
1994	4520478723.404255
1995	4796010638.297873
1996	5364361436.170213
1997	5020744946.808511
1998	3994946808.510638
1999	5221808510.638298
2000	7176063829.787234
2001	6607446808.510638
2002	6956117021.276596
2003	7980851063.829787
2004	10336702127.659575
2005	13396808510.638298
2006	15662234042.553192
2007	17314361702.12766
2008	21231382978.723404
2009	15704787234.042553
2010	17880319148.93617
2011	28609308510.638298
2012	31409042553.19149
2013	34102925531.914894
2014	32069148936.17021
2015	25805319148.93617
2016	23918617021.276596
2017	26881914893.61702
2018	29959042553.19149
2019	29564361702.12766
2020	25249202127.659573
2021	35234574468.085106