Year	U.S. dollars (Billions)
1980	2.316
1981	5.031
1982	-5.533
1983	-38.695
1984	-94.342
1985	-118.159
1986	-147.176
1987	-160.661
1988	-121.159
1989	-99.485
1990	-78.965
1991	2.895
1992	-51.614
1993	-84.816
1994	-121.612
1995	-113.571
1996	-124.773
1997	-140.720
1998	-215.066
1999	-286.609
2000	-401.917
2001	-394.085
2002	-456.106
2003	-522.293
2004	-635.891
2005	-749.232
2006	-816.647
2007	-736.549
2008	-696.523
2009	-379.729
2010	-432.010
2011	-455.302
2012	-418.182
2013	-339.517
2014	-370.056
2015	-408.454
2016	-396.216
2017	-367.615
2018	-439.849
2019	-441.750
2020	-597.139
2021	-831.445
2022	-971.594
2023	-812.746
2024	-732.648
2025	-758.352
2026	-763.234
2027	-752.444
2028	-754.397
2029	-750.621