Year	constant 2015 US$
1976	3739296896.1460533
1977	4384826124.525509
1978	4722393289.872618
1979	5176313033.643474
1980	5482089076.888708
1981	5610213636.639734
1982	5944079536.190522
1983	6231539027.339724
1984	6785971689.36554
1985	7123800692.722186
1986	7287002359.054849
1987	7810965340.194178
1988	8485585136.173892
1989	9189005426.045284
1990	9879531317.222128
1991	9959235690.449804
1992	10881641614.16942
1993	10971088203.843737
1994	11604645340.06317
1995	12028549041.255608
1996	12206425766.422228
1997	12446534723.389902
1998	14382007718.408806
1999	13820207922.249598
2000	14201731344.185703
2001	14982561025.95489
2002	15889394424.784256
2003	16478644116.504585
2004	17015561355.8183
2005	17939668003.817265
2006	18723476318.462566
2007	19491616257.324974
2008	21239631048.956394
2009	21099221640.82447
2010	21332230861.269505
2011	22298817716.83724
2012	20836732319.217533
2013	19344284574.530445
2014	18728462707.65808
2015	19774892629.40306
2016	20361337764.9701
2017	21741278395.24364
2018	22823061209.156727
2019	23640917478.942936
2020	22463833471.650364
2021	24189920241.398308
2022	25772826132.75343
2023	25619179949.172413