Year	current US$
1977	38787639710.81715
1978	47152785103.9426
1979	60137173704.17769
1980	66583963729.48766
1981	77706829275.03392
1982	70571412511.26968
1983	64500517767.463745
1984	62586154319.28358
1985	60872141032.44014
1986	53953438499.87292
1987	56330666532.32228
1988	59044498660.76596
1989	64964793490.1824
1990	77837653750.02472
1991	86249664604.96846
1992	97264494815.78099
1993	102949678310.90755
1994	103899245787.89972
1995	110332172636.3113
1996	124096929991.44351
1997	140744326397.45126
1998	131156111968.39578
1999	130377488242.60626
2000	143662398890.4347
2001	136697640277.54758
2002	138608310201.8684
2003	152207966998.55334
2004	190210659792.54602
2005	232054413996.1356
2006	265748725633.12457
2007	331380273036.80927
2008	357316178216.0688
2009	324869642574.3273
2010	386363682859.18616
2011	419014649469.63776
2012	438654766845.7917
2013	459107596176.61444
2014	482087253800.8213
2015	468691696356.37225
2016	479441904366.8715
2017	528037348876.7972
2018	570482536566.5553
2019	582462020226.4501
2020	448613177437.79474
2021	568854485659.4305
2022	718104864487.0095
2023	774307212299.9612
