Year	U.S. dollars (Billions)
1980	0.063
1981	0.073
1982	0.087
1983	0.094
1984	0.113
1985	0.134
1986	0.158
1987	0.149
1988	0.178
1989	0.201
1990	0.231
1991	0.262
1992	0.306
1993	0.346
1994	0.382
1995	0.466
1996	0.527
1997	0.652
1998	0.693
1999	0.756
2000	0.801
2001	0.767
2002	0.828
2003	1.052
2004	1.227
2005	1.163
2006	1.575
2007	1.868
2008	2.272
2009	2.345
2010	2.588
2011	2.629
2012	2.885
2013	3.286
2014	3.690
2015	4.098
2016	4.367
2017	4.747
2018	5.294
2019	5.599
2020	3.739
2021	5.392
2022	6.238
2023	6.685
2024	7.199
2025	7.897
2026	8.461
2027	9.044
2028	9.640
2029	10.276