Year	current US$
1980	403000000
1981	469000000
1982	560000000
1983	610000000
1984	674000000
1985	689000000
1986	716000000
1987	717000000
1988	739000000
1989	721000000
1990	661000000
1991	348000000
1992	389000000
1993	383000000
1994	356000000
1995	473000000
1996	424000000
1997	569000000
1998	462000000
1999	454000000
2000	536000000
2001	521000000
2002	524000000
2003	616000000
2004	870000000
2005	1065000000
2006	1543000000
2007	1889000000
2008	2539000000
2009	1903000000
2010	2899000000
2011	4818000000
2012	4385000000
2013	4269000000
2014	5775000000
2015	4669000000
2016	4916000000
2017	6201000000
2018	7012000000
2019	7620000000
2020	7576000000
2021	9241000000
2022	12539000000
2023	15185000000