Year	constant 2015 US$
1976	2068092307.7641892
1977	2188665752.747581
1978	2256623794.4069667
1979	2264117843.945285
1980	2168389294.7748723
1981	2133935635.6057673
1982	2202211661.948109
1983	2248094837.5244575
1984	2345257687.007725
1985	2437359663.1093965
1986	2578842323.105649
1987	3017303859.4760623
1988	3256714607.8132772
1989	3469194325.0672636
1990	3652874505.978853
1991	3843098749.1406016
1992	4031279506.49909
1993	4253844860.395783
1994	4483245509.815444
1995	4689395310.199778
1996	4929732167.577559
1997	5083385893.068025
1998	5378704367.042577
1999	5612954825.923194
2000	5883228181.944533
2001	6069294692.796001
2002	6302818230.642684
2003	6573461042.424975
2004	7067477689.682632
2005	7539186713.347687
2006	7963612954.432794
2007	8216844071.9726305
2008	8675770964.801119
2009	8898411141.65518
2010	9132479609.47172
2011	9362152479.49424
2012	9619211424.331953
2013	9859982916.533503
2014	10140621738.015528
2015	10417580662.184404
2016	10749770674.998371
2017	11054369531.769184
2018	11434708745.686499
2019	11771997501.318085
2020	10258698240.426376
2021	10468097928.165052
2022	10872189715.388842
2023	11030986968.68191