Year	U.S. dollars (Billions)
1980	6.639
1981	6.214
1982	6.214
1983	6.476
1984	6.864
1985	8.457
1986	7.918
1987	9.050
1988	9.818
1989	11.421
1990	12.571
1991	12.186
1992	9.395
1993	6.819
1994	4.965
1995	6.197
1996	7.994
1997	9.388
1998	7.958
1999	7.526
2000	11.166
2001	10.930
2002	15.286
2003	17.813
2004	23.552
2005	36.971
2006	52.381
2007	65.266
2008	88.539
2009	70.307
2010	83.799
2011	111.790
2012	128.053
2013	136.710
2014	145.712
2015	116.194
2016	101.124
2017	122.022
2018	101.353
2019	84.516
2020	57.139
2021	74.861
2022	122.826
2023	94.381
2024	92.123
2025	95.386
2026	98.704
2027	104.687
2028	109.642
2029	114.976