Year	U.S. dollars (Billions)
1980	1.994
1981	1.656
1982	1.396
1983	1.330
1984	1.222
1985	1.281
1986	1.795
1987	2.107
1988	2.345
1989	2.302
1990	2.772
1991	2.740
1992	2.873
1993	2.189
1994	1.697
1995	2.240
1996	2.448
1997	2.494
1998	2.361
1999	2.370
2000	2.014
2001	2.000
2002	2.301
2003	2.854
2004	3.048
2005	3.080
2006	3.173
2007	3.760
2008	4.578
2009	4.717
2010	4.750
2011	5.421
2012	5.417
2013	6.022
2014	6.395
2015	5.756
2016	6.069
2017	6.385
2018	7.033
2019	6.993
2020	7.400
2021	8.338
2022	8.144
2023	9.055
2024	9.832
2025	10.557
2026	11.337
2027	12.180
2028	13.087
2029	14.068