Year	U.S. dollars (Billions)
1980	3.912
1981	3.449
1982	3.406
1983	3.261
1984	2.385
1985	2.319
1986	2.335
1987	2.374
1988	2.771
1989	3.167
1990	4.818
1991	5.252
1992	5.813
1993	6.680
1994	7.679
1995	8.922
1996	9.586
1997	10.222
1998	10.937
1999	11.284
2000	11.785
2001	12.283
2002	12.664
2003	13.244
2004	13.725
2005	14.698
2006	16.000
2007	17.012
2008	17.987
2009	17.602
2010	18.448
2011	20.284
2012	21.386
2013	21.991
2014	22.593
2015	23.438
2016	24.191
2017	24.979
2018	26.021
2019	26.881
2020	24.921
2021	29.043
2022	31.989
2023	34.016
2024	35.333
2025	37.090
2026	38.859
2027	40.643
2028	42.440
2029	44.325