Year	U.S. dollars (Billions)
1992	0.000
1993	0.000
1994	0.000
1995	0.000
1996	0.002
1997	-0.580
1998	-0.935
1999	-0.571
2000	0.412
2001	0.115
2002	0.583
2003	0.304
2004	0.082
2005	0.875
2006	3.351
2007	4.037
2008	3.560
2009	-3.918
2010	-3.125
2011	-0.331
2012	-0.640
2013	-4.239
2014	-4.109
2015	-7.525
2016	-9.699
2017	-6.221
2018	3.022
2019	1.545
2020	1.538
2021	4.019
2022	5.479
2023	3.664
2024	3.322
2025	2.506
2026	1.462
2027	0.324
2028	-0.595
2029	-1.815