Year	U.S. dollars (Billions)
1980	15.302
1981	13.778
1982	4.873
1983	5.654
1984	7.004
1985	4.961
1986	5.670
1987	4.395
1988	5.093
1989	9.621
1990	3.720
1991	-26.220
1992	-0.451
1993	2.502
1994	3.219
1995	5.016
1996	7.107
1997	7.873
1998	2.215
1999	5.064
2000	14.670
2001	8.325
2002	4.257
2003	9.418
2004	15.585
2005	30.065
2006	45.303
2007	41.315
2008	60.240
2009	28.291
2010	36.980
2011	66.131
2012	79.126
2013	70.198
2014	54.403
2015	4.013
2016	-5.060
2017	9.609
2018	19.895
2019	17.861
2020	4.853
2021	37.387
2022	63.131
2023	53.039
2024	48.304
2025	44.330
2026	39.871
2027	36.496
2028	33.720
2029	31.307