Year	U.S. dollars (Billions)
1980	-0.639
1981	2.651
1982	3.849
1983	0.822
1984	6.129
1985	6.071
1986	4.748
1987	6.652
1988	9.112
1989	8.248
1990	7.860
1991	11.246
1992	13.124
1993	17.455
1994	16.855
1995	17.151
1996	18.133
1997	24.845
1998	23.019
1999	25.370
2000	29.306
2001	19.011
2002	20.834
2003	38.949
2004	50.516
2005	47.280
2006	55.102
2007	41.144
2008	6.985
2009	31.283
2010	77.695
2011	44.605
2012	60.948
2013	68.074
2014	50.415
2015	61.587
2016	50.039
2017	36.957
2018	40.636
2019	29.701
2020	3.647
2021	55.985
2022	77.210
2023	67.623
2024	77.319
2025	74.119
2026	81.741
2027	80.311
2028	89.235
2029	88.386