Year	U.S. dollars (Billions)
1980	3.531
1981	3.056
1982	2.840
1983	2.538
1984	2.056
1985	2.027
1986	2.680
1987	3.143
1988	3.210
1989	3.068
1990	3.491
1991	3.271
1992	3.372
1993	3.041
1994	1.935
1995	2.296
1996	2.397
1997	2.285
1998	2.639
1999	2.532
2000	2.235
2001	2.442
2002	2.772
2003	3.382
2004	3.746
2005	4.372
2006	4.743
2007	5.716
2008	7.279
2009	7.324
2010	7.838
2011	8.754
2012	9.412
2013	10.206
2014	10.830
2015	9.684
2016	10.350
2017	11.181
2018	12.814
2019	12.917
2020	13.764
2021	14.923
2022	15.448
2023	16.528
2024	18.816
2025	20.410
2026	22.088
2027	23.807
2028	25.701
2029	27.720