Year	U.S. dollars (Billions)
1980	140.384
1981	128.148
1982	113.059
1983	103.890
1984	108.255
1985	113.249
1986	149.633
1987	181.991
1988	205.883
1989	216.691
1990	259.900
1991	272.205
1992	283.228
1993	212.953
1994	229.034
1995	267.307
1996	291.746
1997	268.146
1998	270.810
1999	274.071
2000	262.834
2001	242.395
2002	266.848
2003	334.337
2004	385.119
2005	392.219
2006	423.091
2007	491.255
2008	517.706
2009	436.536
2010	495.813
2011	574.094
2012	552.484
2013	586.842
2014	581.964
2015	505.104
2016	515.655
2017	541.019
2018	555.455
2019	533.880
2020	547.054
2021	639.715
2022	590.410
2023	593.268
2024	623.048
2025	651.281
2026	680.164
2027	711.100
2028	742.266
2029	774.570