Year	U.S. dollars (Billions)
1995	-0.164
1996	-0.181
1997	-0.095
1998	-0.098
1999	-0.058
2000	-0.209
2001	-0.064
2002	0.045
2003	-0.067
2004	-0.332
2005	-0.523
2006	-0.635
2007	-0.307
2008	-0.095
2009	-0.563
2010	-0.408
2011	-0.019
2012	0.157
2013	0.270
2014	0.989
2015	0.299
2016	-0.066
2017	0.790
2018	0.865
2019	1.445
2020	0.335
2021	0.218
2022	-0.547
2023	0.400
2024	0.571
2025	0.638
2026	0.667
2027	0.705
2028	0.741
2029	0.786