Year	constant 2015 US$
1990	14225834974.808071
1991	9728289045.023039
1992	10795090227.898756
1993	11691477244.617754
1994	14113486017.201277
1995	15117235330.979582
1996	16387268879.225243
1997	16151649552.539062
1998	15395143350.544058
1999	15100800320.492167
2000	15984439527.046442
2001	17670267400.941254
2002	18961540626.31334
2003	20906667969.61518
2004	22915018624.722443
2005	25556021852.907936
2006	32339944221.26932
2007	48832534443.80371
2008	57547246420.099724
2009	38015857077.489525
2010	36969278660.232864
2011	40270809154.45785
2012	41313383682.84867
2013	39096678277.61788
2014	41191779858.15176
2015	44378227146.689926
2016	43400553750.20069
2017	45802162556.48364
2018	45810589789.23937
2019	51567686258.74893
2020	52137306181.39631
2021	53649289013.96367
2022	56822237477.1827
2023	65016901488.217964