Year	U.S. dollars (Billions)
1980	6.434
1981	5.549
1982	4.557
1983	4.473
1984	4.385
1985	4.544
1986	6.611
1987	8.211
1988	9.301
1989	9.903
1990	12.628
1991	13.683
1992	15.328
1993	15.714
1994	17.487
1995	20.571
1996	20.464
1997	18.428
1998	19.263
1999	21.088
2000	21.240
2001	21.388
2002	23.633
2003	29.660
2004	35.049
2005	37.693
2006	42.912
2007	51.593
2008	58.838
2009	54.408
2010	56.260
2011	61.685
2012	59.814
2013	65.204
2014	68.823
2015	60.078
2016	62.200
2017	65.689
2018	71.033
2019	69.898
2020	73.640
2021	85.641
2022	81.706
2023	85.780
2024	88.556
2025	93.366
2026	97.424
2027	101.572
2028	105.834
2029	110.144