Year	U.S. dollars (Billions)
1980	5.202
1981	4.759
1982	4.785
1983	4.686
1984	3.906
1985	3.803
1986	4.348
1987	3.213
1988	3.189
1989	3.176
1990	3.931
1991	3.255
1992	3.715
1993	4.063
1994	3.522
1995	3.838
1996	4.932
1997	4.263
1998	4.402
1999	4.278
2000	4.629
2001	5.438
2002	5.352
2003	6.372
2004	5.065
2005	5.859
2006	6.396
2007	8.525
2008	10.725
2009	9.617
2010	9.983
2011	11.552
2012	11.579
2013	12.424
2014	12.523
2015	11.323
2016	11.849
2017	13.176
2018	13.760
2019	14.105
2020	13.051
2021	14.555
2022	15.285
2023	15.753
2024	16.465
2025	17.917
2026	19.268
2027	20.762
2028	22.725
2029	24.898