Year	U.S. dollars (Billions)
1980	28.862
1981	31.055
1982	32.291
1983	29.907
1984	33.511
1985	35.700
1986	41.076
1987	50.623
1988	59.708
1989	68.790
1990	76.929
1991	88.960
1992	104.272
1993	120.354
1994	135.812
1995	144.652
1996	159.718
1997	177.349
1998	168.858
1999	165.734
2000	171.643
2001	169.381
2002	166.336
2003	161.370
2004	169.085
2005	181.556
2006	193.515
2007	211.583
2008	219.279
2009	214.048
2010	228.639
2011	248.514
2012	262.629
2013	275.697
2014	291.460
2015	309.386
2016	320.860
2017	341.271
2018	361.731
2019	363.075
2020	344.941
2021	368.954
2022	358.696
2023	376.969
2024	406.775
2025	427.782
2026	449.263
2027	471.607
2028	494.999
2029	519.326