Year	U.S. dollars (Billions)
1980	2.565
1981	2.817
1982	3.235
1983	2.875
1984	2.119
1985	1.993
1986	2.369
1987	2.672
1988	3.184
1989	3.692
1990	4.663
1991	4.285
1992	4.328
1993	5.440
1994	5.453
1995	6.549
1996	7.394
1997	8.400
1998	8.787
1999	8.887
2000	9.065
2001	9.195
2002	9.719
2003	9.430
2004	10.175
2005	11.233
2006	11.946
2007	12.881
2008	13.743
2009	12.107
2010	13.193
2011	14.413
2012	14.765
2013	14.213
2014	13.865
2015	14.154
2016	14.108
2017	14.755
2018	15.648
2019	15.808
2020	13.885
2021	14.674
2022	17.003
2023	18.884
2024	20.098
2025	20.856
2026	21.544
2027	22.256
2028	22.997
2029	23.763