Year	U.S. dollars (Billions)
1980	-1.613
1981	-1.542
1982	-1.348
1983	-0.653
1984	-0.403
1985	0.020
1986	0.337
1987	-0.103
1988	1.947
1989	2.978
1990	3.142
1991	4.874
1992	5.854
1993	4.107
1994	11.264
1995	14.486
1996	14.085
1997	15.589
1998	18.682
1999	14.845
2000	10.637
2001	12.960
2002	13.767
2003	23.730
2004	22.214
2005	29.729
2006	39.971
2007	49.114
2008	29.204
2009	31.827
2010	54.996
2011	62.069
2012	52.064
2013	48.312
2014	56.519
2015	57.574
2016	56.827
2017	62.333
2018	60.210
2019	60.459
2020	57.957
2021	86.137
2022	89.701
2023	99.128
2024	94.792
2025	97.683
2026	99.788
2027	96.036
2028	95.156
2029	93.888