Year	U.S. dollars (Billions)
1980	2.386
1981	2.076
1982	1.934
1983	1.767
1984	1.579
1985	1.746
1986	2.290
1987	2.665
1988	2.942
1989	2.942
1990	3.488
1991	3.526
1992	3.775
1993	3.599
1994	2.164
1995	2.676
1996	2.909
1997	2.753
1998	3.155
1999	3.388
2000	2.961
2001	3.190
2002	3.620
2003	4.740
2004	5.449
2005	6.150
2006	6.548
2007	7.627
2008	9.450
2009	9.440
2010	10.118
2011	12.078
2012	12.569
2013	13.444
2014	13.947
2015	11.833
2016	12.829
2017	14.094
2018	15.916
2019	16.031
2020	17.754
2021	19.654
2022	18.906
2023	20.382
2024	21.902
2025	23.560
2026	25.237
2027	27.011
2028	28.929
2029	30.961