Year	U.S. dollars (Billions)
2000	-0.081
2001	-0.186
2002	-0.214
2003	-0.294
2004	-0.259
2005	-0.307
2006	-0.284
2007	-0.293
2008	-0.678
2009	-0.521
2010	-0.685
2011	-0.851
2012	-0.377
2013	-0.238
2014	-0.511
2015	-0.552
2016	-0.533
2017	-0.394
2018	-0.601
2019	-0.448
2020	-0.539
2021	-0.822
2022	-0.991
2023	-0.793
2024	-0.782
2025	-0.711
2026	-0.708
2027	-0.722
2028	-0.715
2029	-0.707