Year	U.S. dollars (Billions)
1980	-6.896
1981	-6.487
1982	-5.631
1983	-3.594
1984	-1.847
1985	-2.178
1986	2.607
1987	8.631
1988	12.758
1989	3.766
1990	-2.804
1991	-8.033
1992	-2.901
1993	1.688
1994	-4.793
1995	-10.230
1996	-24.461
1997	-10.812
1998	40.113
1999	21.785
2000	10.181
2001	2.165
2002	4.066
2003	11.308
2004	29.290
2005	12.209
2006	2.095
2007	10.473
2008	1.753
2009	33.088
2010	27.951
2011	16.638
2012	48.791
2013	77.259
2014	83.030
2015	105.119
2016	97.924
2017	75.231
2018	77.467
2019	59.676
2020	75.902
2021	85.228
2022	25.829
2023	35.488
2024	50.448
2025	62.859
2026	73.651
2027	82.514
2028	90.272
2029	97.396