Year	U.S. dollars (Billions)
1980	0.223
1981	0.232
1982	0.232
1983	0.244
1984	0.273
1985	0.271
1986	0.295
1987	0.345
1988	0.407
1989	0.470
1990	0.533
1991	0.578
1992	0.672
1993	0.726
1994	0.750
1995	0.796
1996	0.828
1997	0.845
1998	0.892
1999	0.950
2000	1.082
2001	1.129
2002	1.199
2003	1.267
2004	1.356
2005	1.427
2006	1.584
2007	1.699
2008	1.732
2009	1.681
2010	1.739
2011	1.819
2012	1.900
2013	2.022
2014	2.125
2015	2.195
2016	2.241
2017	2.267
2018	2.293
2019	2.387
2020	2.048
2021	2.425
2022	2.831
2023	3.094
2024	3.296
2025	3.456
2026	3.589
2027	3.726
2028	3.869
2029	4.017