Year	U.S. dollars (Billions)
1980	13.877
1981	11.502
1982	10.320
1983	9.312
1984	9.284
1985	9.470
1986	12.675
1987	13.944
1988	14.092
1989	13.487
1990	14.923
1991	14.504
1992	15.416
1993	15.268
1994	11.492
1995	15.205
1996	16.780
1997	16.203
1998	17.433
1999	17.114
2000	14.851
2001	15.485
2002	17.148
2003	21.206
2004	22.924
2005	23.626
2006	24.628
2007	28.158
2008	33.621
2009	33.693
2010	34.431
2011	35.529
2012	37.030
2013	43.228
2014	48.882
2015	45.815
2016	48.408
2017	52.512
2018	58.522
2019	60.383
2020	63.119
2021	72.833
2022	72.046
2023	79.978
2024	86.911
2025	93.892
2026	101.688
2027	109.883
2028	118.670
2029	128.306