Year	U.S. dollars (Billions)
1992	-0.237
1993	-0.439
1994	0.120
1995	-0.020
1996	-0.980
1997	-0.584
1998	-0.102
1999	-0.163
2000	0.547
2001	0.185
2002	0.277
2003	0.642
2004	0.860
2005	1.146
2006	1.729
2007	1.807
2008	3.183
2009	1.760
2010	2.279
2011	2.783
2012	1.209
2013	1.316
2014	2.076
2015	0.896
2016	0.213
2017	1.478
2018	-3.593
2019	-3.371
2020	-3.028
2021	-4.895
2022	-0.619
2023	-4.493
2024	-4.825
2025	-4.996
2026	-5.689
2027	-6.412
2028	-7.380
2029	-8.297