Year	U.S. dollars (Billions)
1991	0.650
1992	0.672
1993	0.655
1994	0.691
1995	0.699
1996	0.694
1997	0.706
1998	0.722
1999	0.759
2000	0.781
2001	0.811
2002	0.837
2003	0.882
2004	0.936
2005	0.996
2006	1.080
2007	1.191
2008	1.382
2009	1.426
2010	1.544
2011	1.740
2012	1.901
2013	2.044
2014	2.221
2015	2.424
2016	2.605
2017	2.763
2018	2.913
2019	3.089
2020	3.185
2021	3.386
2022	3.726
2023	4.023
2024	4.364
2025	4.715
2026	5.103
2027	5.498
2028	5.926
2029	6.322