Year	U.S. dollars (Billions)
1980	2.400
1981	2.381
1982	2.335
1983	2.284
1984	2.327
1985	2.473
1986	2.675
1987	2.840
1988	3.317
1989	3.384
1990	3.710
1991	4.195
1992	4.570
1993	4.562
1994	4.707
1995	5.139
1996	5.316
1997	5.212
1998	5.003
1999	4.798
2000	4.039
2001	3.806
2002	4.022
2003	4.759
2004	5.012
2005	4.506
2006	4.178
2007	6.317
2008	6.966
2009	6.753
2010	6.858
2011	6.775
2012	7.387
2013	8.376
2014	8.777
2015	8.790
2016	8.604
2017	10.325
2018	11.857
2019	13.443
2020	14.089
2021	16.320
2022	19.589
2023	23.005
2024	25.447
2025	27.216
2026	29.027
2027	31.064
2028	33.255
2029	35.384