Year	U.S. dollars (Billions)
1980	9.566
1981	9.223
1982	8.900
1983	9.202
1984	9.054
1985	9.245
1986	9.910
1987	10.663
1988	11.073
1989	11.069
1990	14.133
1991	14.897
1992	17.809
1993	16.724
1994	17.886
1995	20.616
1996	22.324
1997	21.762
1998	22.870
1999	24.066
2000	22.524
2001	23.146
2002	24.274
2003	28.797
2004	32.710
2005	33.851
2006	36.059
2007	40.819
2008	47.039
2009	45.593
2010	46.210
2011	48.122
2012	47.311
2013	48.681
2014	50.273
2015	45.779
2016	44.360
2017	42.167
2018	42.687
2019	41.905
2020	42.540
2021	46.688
2022	46.265
2023	51.283
2024	54.708
2025	55.847
2026	58.069
2027	59.090
2028	59.468
2029	60.037