Year	U.S. dollars (Billions)
1980	64.439
1981	63.597
1982	62.647
1983	61.627
1984	62.058
1985	65.417
1986	78.693
1987	94.231
1988	101.901
1989	102.634
1990	119.791
1991	121.872
1992	130.838
1993	120.579
1994	127.132
1995	152.031
1996	163.520
1997	161.357
1998	154.230
1999	162.384
2000	171.456
2001	174.240
2002	195.915
2003	229.385
2004	265.267
2005	309.979
2006	346.914
2007	402.646
2008	464.915
2009	387.974
2010	431.052
2011	501.361
2012	512.777
2013	526.014
2014	501.737
2015	388.160
2016	370.957
2017	401.745
2018	439.788
2019	408.743
2020	367.633
2021	503.368
2022	593.727
2023	485.513
2024	526.951
2025	554.775
2026	564.342
2027	581.215
2028	597.958
2029	617.095