Year	U.S. dollars (Billions)
1980	4.338
1981	3.934
1982	3.850
1983	3.435
1984	3.350
1985	3.668
1986	5.188
1987	6.241
1988	6.173
1989	6.083
1990	7.078
1991	6.955
1992	7.435
1993	7.014
1994	4.746
1995	6.026
1996	6.300
1997	5.867
1998	6.416
1999	6.599
2000	6.016
2001	6.508
2002	7.001
2003	8.767
2004	10.072
2005	11.015
2006	11.699
2007	13.996
2008	16.852
2009	16.128
2010	16.134
2011	17.811
2012	17.672
2013	18.919
2014	19.802
2015	17.777
2016	19.035
2017	20.989
2018	23.127
2019	23.405
2020	24.534
2021	27.584
2022	27.744
2023	31.407
2024	35.450
2025	39.963
2026	42.945
2027	45.872
2028	49.815
2029	53.015