Year	U.S. dollars (Billions)
1980	-0.720
1981	-0.389
1982	-0.443
1983	-0.418
1984	-0.163
1985	-0.108
1986	-0.183
1987	-0.364
1988	-0.019
1989	-0.327
1990	-0.280
1991	-0.157
1992	-0.708
1993	-0.533
1994	-0.283
1995	-0.183
1996	-0.213
1997	-0.163
1998	-0.338
1999	-0.429
2000	-1.027
2001	-0.741
2002	-0.798
2003	1.036
2004	1.041
2005	-0.473
2006	-1.287
2007	-2.166
2008	-4.520
2009	-2.303
2010	-4.024
2011	-4.359
2012	-3.971
2013	-2.568
2014	-2.170
2015	-1.280
2016	-0.815
2017	-0.133
2018	-1.322
2019	-1.188
2020	-1.337
2021	-2.685
2022	-6.327
2023	-4.699
2024	-4.667
2025	-4.779
2026	-4.797
2027	-5.098
2028	-5.303
2029	-5.742