Year	U.S. dollars (Billions)
1980	2.031
1981	1.660
1982	1.468
1983	1.418
1984	1.416
1985	1.426
1986	1.981
1987	2.308
1988	2.316
1989	2.827
1990	3.223
1991	3.284
1992	3.372
1993	3.362
1994	2.575
1995	3.337
1996	3.416
1997	3.208
1998	3.328
1999	3.444
2000	2.963
2001	3.468
2002	3.905
2003	4.713
2004	5.452
2005	6.251
2006	6.906
2007	8.157
2008	9.871
2009	10.249
2010	10.698
2011	12.993
2012	12.450
2013	13.243
2014	14.369
2015	13.106
2016	14.022
2017	15.360
2018	17.079
2019	17.281
2020	17.643
2021	19.786
2022	18.724
2023	20.684
2024	21.662
2025	22.984
2026	24.565
2027	26.244
2028	28.049
2029	29.946