Year	U.S. dollars (Billions)
1980	33.422
1981	35.999
1982	37.799
1983	41.366
1984	43.179
1985	40.185
1986	44.520
1987	52.204
1988	63.704
1989	74.637
1990	88.467
1991	101.247
1992	115.576
1993	128.889
1994	146.684
1995	169.279
1996	183.035
1997	150.180
1998	113.676
1999	126.669
2000	126.392
2001	120.296
2002	134.301
2003	152.281
2004	172.896
2005	189.318
2006	221.758
2007	262.943
2008	291.383
2009	281.711
2010	341.105
2011	370.819
2012	397.558
2013	420.334
2014	407.339
2015	401.296
2016	413.366
2017	456.357
2018	506.754
2019	543.977
2020	500.462
2021	506.256
2022	495.646
2023	514.945
2024	548.890
2025	573.394
2026	605.762
2027	643.894
2028	678.622
2029	710.434