Year	current US$
1990	21050438418.374374
1991	26819554871.619507
1992	28030246525.52095
1993	26681341787.955452
1994	23673242088.825607
1995	20708127563.40504
1996	22234432234.43223
1997	25389158670.850094
1998	24404693160.868656
1999	25044684149.362564
2000	22604892715.593822
2001	21351460341.385372
2002	14185826771.653543
2003	12192455390.625
2004	16027612153.846153
2005	16928400126.873972
2006	19837740146.714455
2007	25007345690.989944
2008	28914350069.71449
2009	33523223143.528618
2010	34473460063.19916
2011	37702752599.35041
2012	45594692706.43438
2013	48881411536.75575
2014	49239627098.982864
2015	46314753006.421906
2016	48990663629.58323
2017	53354378614.16825
2018	53235719251.82074
2019	64646197389.1893
2020	63026629134.270485
2021	27451115036.798706
2022	29368140572.49113
2023	29261480488.929398