Year	U.S. dollars (Billions)
1980	40.190
1981	34.720
1982	34.616
1983	32.988
1984	30.890
1985	30.384
1986	24.756
1987	23.009
1988	25.870
1989	27.446
1990	31.627
1991	34.995
1992	35.459
1993	31.912
1994	29.719
1995	33.739
1996	36.827
1997	37.702
1998	30.921
1999	37.129
2000	39.498
2001	35.206
2002	21.128
2003	27.026
2004	34.054
2005	48.852
2006	60.094
2007	68.211
2008	86.804
2009	60.809
2010	75.381
2011	48.170
2012	92.542
2013	75.352
2014	57.373
2015	48.718
2016	49.913
2017	67.153
2018	76.682
2019	69.280
2020	46.921
2021	35.224
2022	43.289
2023	45.011
2024	48.221
2025	50.559
2026	52.286
2027	53.017
2028	53.801
2029	55.191