Year	U.S. dollars (Billions)
1986	0.208
1987	0.142
1988	0.279
1989	0.350
1990	0.909
1991	2.033
1992	2.466
1993	2.453
1994	2.795
1995	3.479
1996	3.545
1997	3.481
1998	3.164
1999	3.551
2000	3.707
2001	4.154
2002	4.507
2003	5.054
2004	5.879
2005	7.058
2006	8.342
2007	10.117
2008	12.162
2009	12.490
2010	13.796
2011	16.017
2012	17.829
2013	19.806
2014	22.040
2015	24.217
2016	26.591
2017	29.394
2018	33.181
2019	36.682
2020	34.681
2021	36.299
2022	39.063
2023	41.855
2024	45.150
2025	48.725
2026	52.610
2027	56.747
2028	61.097
2029	65.607