Year	U.S. dollars (Billions)
1980	1.242
1981	1.179
1982	1.131
1983	1.198
1984	1.108
1985	1.122
1986	1.515
1987	1.919
1988	2.225
1989	2.286
1990	2.743
1991	3.017
1992	3.398
1993	3.502
1994	3.887
1995	4.439
1996	4.590
1997	4.310
1998	4.354
1999	4.597
2000	4.935
2001	4.882
2002	5.123
2003	6.155
2004	6.962
2005	6.867
2006	7.123
2007	8.260
2008	10.125
2009	9.252
2010	10.138
2011	11.673
2012	11.826
2013	12.293
2014	13.074
2015	12.007
2016	12.594
2017	13.714
2018	14.736
2019	14.436
2020	11.408
2021	11.484
2022	12.949
2023	14.371
2024	16.359
2025	17.651
2026	18.954
2027	20.189
2028	21.488
2029	22.842