Year	U.S. dollars (Billions)
1980	46.053
1981	55.319
1982	55.375
1983	48.401
1984	39.111
1985	48.286
1986	52.290
1987	58.477
1988	60.538
1989	54.236
1990	38.516
1991	29.070
1992	19.779
1993	26.624
1994	30.376
1995	35.838
1996	35.692
1997	35.644
1998	42.543
1999	35.953
2000	37.447
2001	40.396
2002	46.035
2003	57.790
2004	75.059
2005	98.547
2006	122.114
2007	174.831
2008	215.568
2009	174.564
2010	170.294
2011	192.835
2012	179.243
2013	189.830
2014	199.981
2015	177.877
2016	185.334
2017	210.529
2018	243.498
2019	250.993
2020	251.699
2021	286.015
2022	301.273
2023	345.894
2024	369.971
2025	389.689
2026	413.281
2027	438.774
2028	463.786
2029	488.550