Year	U.S. dollars (Billions)
1980	2.302
1981	1.557
1982	1.542
1983	1.365
1984	1.456
1985	1.580
1986	2.036
1987	2.430
1988	2.552
1989	2.370
1990	2.890
1991	2.954
1992	3.284
1993	3.199
1994	2.227
1995	2.993
1996	3.251
1997	3.124
1998	3.362
1999	3.681
2000	3.522
2001	3.666
2002	4.191
2003	5.348
2004	6.187
2005	6.571
2006	7.034
2007	8.170
2008	9.787
2009	9.728
2010	9.543
2011	10.691
2012	11.148
2013	12.518
2014	13.288
2015	11.389
2016	11.818
2017	12.697
2018	14.257
2019	14.392
2020	15.674
2021	17.699
2022	17.439
2023	19.398
2024	21.371
2025	23.107
2026	24.927
2027	26.914
2028	29.064
2029	31.398