Year	U.S. dollars (Billions)
1980	1.832
1981	2.156
1982	2.497
1983	2.900
1984	3.966
1985	3.854
1986	5.800
1987	3.409
1988	1.499
1989	2.082
1990	0.519
1991	3.678
1992	3.894
1993	3.726
1994	3.861
1995	4.140
1996	4.308
1997	4.390
1998	4.635
1999	4.856
2000	5.109
2001	5.335
2002	5.224
2003	5.322
2004	5.793
2005	6.321
2006	6.764
2007	7.423
2008	8.497
2009	8.297
2010	8.759
2011	9.774
2012	10.532
2013	10.983
2014	11.880
2015	12.757
2016	13.286
2017	13.786
2018	13.025
2019	12.713
2020	12.682
2021	14.145
2022	15.671
2023	17.412
2024	18.829
2025	20.268
2026	21.816
2027	23.483
2028	25.277
2029	27.208