Year	U.S. dollars (Billions)
1980	0.147
1981	0.154
1982	0.148
1983	0.147
1984	0.151
1985	0.169
1986	0.208
1987	0.249
1988	0.284
1989	0.305
1990	0.369
1991	0.374
1992	0.434
1993	0.474
1994	0.486
1995	0.508
1996	0.503
1997	0.563
1998	0.608
1999	0.623
2000	0.615
2001	0.622
2002	0.698
2003	0.706
2004	0.839
2005	0.919
2006	1.016
2007	1.034
2008	0.998
2009	0.847
2010	0.970
2011	1.018
2012	1.060
2013	1.328
2014	1.388
2015	1.432
2016	1.568
2017	1.675
2018	1.777
2019	1.867
2020	1.384
2021	1.490
2022	2.058
2023	2.153
2024	2.203
2025	2.334
2026	2.481
2027	2.649
2028	2.831
2029	3.025