Year	U.S. dollars (Billions)
1980	2.165
1981	1.775
1982	1.548
1983	1.407
1984	1.294
1985	1.327
1986	1.815
1987	2.205
1988	2.346
1989	2.478
1990	2.909
1991	3.035
1992	3.280
1993	3.004
1994	2.068
1995	2.457
1996	2.840
1997	2.568
1998	2.240
1999	2.646
2000	3.624
2001	3.038
2002	3.330
2003	3.863
2004	5.101
2005	6.654
2006	8.073
2007	8.784
2008	11.649
2009	9.713
2010	13.159
2011	15.653
2012	17.704
2013	17.959
2014	17.918
2015	11.891
2016	10.928
2017	11.830
2018	14.781
2019	13.977
2020	11.485
2021	13.387
2022	13.961
2023	14.423
2024	15.501
2025	16.229
2026	17.084
2027	18.076
2028	19.188
2029	20.527