Year	U.S. dollars (Billions)
1992	0.314
1993	0.621
1994	0.684
1995	-1.306
1996	-0.942
1997	-2.487
1998	-1.463
1999	-1.489
2000	-0.312
2001	-0.503
2002	-1.708
2003	-3.151
2004	-2.493
2005	-3.289
2006	-3.932
2007	-4.709
2008	-7.512
2009	-4.041
2010	-1.273
2011	-1.065
2012	-1.038
2013	-0.634
2014	0.177
2015	1.663
2016	1.145
2017	1.876
2018	1.002
2019	1.541
2020	-0.556
2021	0.677
2022	-1.997
2023	1.019
2024	1.279
2025	0.860
2026	0.369
2027	0.181
2028	-0.058
2029	-0.159