Year	U.S. dollars (Billions)
1980	1.174
1981	1.037
1982	1.094
1983	1.208
1984	1.200
1985	1.117
1986	1.515
1987	2.374
1988	3.082
1989	3.441
1990	3.799
1991	3.802
1992	3.928
1993	3.957
1994	4.258
1995	4.805
1996	4.926
1997	5.011
1998	4.808
1999	5.413
2000	5.682
2001	5.460
2002	5.395
2003	7.469
2004	8.819
2005	9.833
2006	9.919
2007	10.566
2008	10.731
2009	10.118
2010	12.637
2011	15.111
2012	13.907
2013	14.272
2014	15.470
2015	13.531
2016	15.083
2017	16.105
2018	17.032
2019	16.696
2020	14.930
2021	18.737
2022	20.352
2023	20.445
2024	21.418
2025	22.779
2026	24.828
2027	26.791
2028	28.909
2029	31.184