Year	constant 2015 US$
1981	96926089904.6593
1982	89402744883.33548
1983	76430833144.07625
1984	75780871036.8853
1985	80392730698.15887
1986	78541027552.3074
1987	88968017454.04184
1988	90858851491.92815
1989	83918778318.764
1990	77253513311.64812
1991	72332820512.40373
1992	73118922278.6005
1993	66971624725.39336
1994	62068352779.418945
1995	60461408889.78471
1996	62351178363.133385
1997	61395105140.863785
1998	59543812762.68593
1999	62474043870.51095
2000	62132363144.8862
2001	63762864549.429756
2002	69400672706.08636
2003	65207884967.40713
2004	65802061676.448044
2005	67819302138.78011
2006	69997953979.75429
2007	72801164478.43663
2008	75852622732.11533
2009	79575180628.76802
2010	81521604301.43922
2011	88658082969.01111
2012	95102267592.36108
2013	105127435784.65799
2014	111533373054.36263
2015	113837750121.62852
2016	115091721934.12714
2017	117826972024.21333
2018	122847627846.90175
2019	126786294491.75682
2020	122637487429.98839
2021	128688906982.10667
2022	134144617061.21332
2023	138628791425.43988