Year	constant 2015 US$
1980	30408546077.83071
1981	31898614054.91263
1982	32643308122.872692
1983	33763073451.894703
1984	34909817206.716576
1985	35846601464.147934
1986	37354883785.45494
1987	39616540393.69184
1988	43952448746.31267
1989	42506465016.45109
1990	38630990310.869064
1991	35368465963.240295
1992	32796333900.612656
1993	32310877694.5768
1994	32898293113.228947
1995	33839848536.419327
1996	35601345586.56682
1997	30576080099.841156
1998	31734644883.140453
1999	29070174722.033123
2000	30403689584.751526
2001	31566236668.93578
2002	33419783866.5759
2003	35170029498.52507
2004	37459748127.97821
2005	40103038915.36192
2006	42831084070.796455
2007	45681230428.86317
2008	48481288291.35466
2009	46858550601.316086
2010	47587369525.75448
2011	48582029158.15747
2012	48945818584.07079
2013	48680164511.00522
2014	49142357612.88859
2015	50811995688.67711
2016	52349885976.855
2017	53787375765.82709
2018	55236895280.235985
2019	57465808373.042885
2020	55186624687.99637
2021	59414884842.29635
2022	61747770024.9603
2023	62887874404.35671