Year	constant 2015 US$
1975	4047028268.4994593
1976	4047028268.4994593
1977	3453069915.683881
1978	3453069915.683881
1979	3010090639.3730145
1980	2839466476.0255785
1981	2840633272.8988786
1982	2840633272.8988786
1983	2966570087.685387
1984	3112883675.731971
1985	3258261072.341985
1986	3382101645.92205
1987	4110319513.4309645
1988	4602608736.386033
1989	4762751130.813261
1990	4818109151.516216
1991	5183866172.193434
1992	5547645970.310134
1993	5775009073.08453
1994	3764807025.6782403
1995	4137653518.652487
1996	4381671866.902059
1997	4557228855.533141
1998	4770581544.697594
1999	5376702112.449897
2000	5914027156.783118
2001	6395924923.38599
2002	6816708954.479599
2003	7396531098.798196
2004	8161371525.297201
2005	9242760345.850687
2006	10238305796.061274
2007	11283900343.070341
2008	12038971276.864029
2009	12049408698.888386
2010	12767924407.168629
2011	13670561753.822906
2012	14670337167.443521
2013	15749584749.025084
2014	16874510037.717978
2015	18049954289.472065
2016	19301414292.096066
2017	20651915662.772926
2018	22194442188.32528
2019	23760061873.144226
2020	23024448758.18615
2021	23721258226.499096
2022	24964207155.80371
2023	26312274342.205734