Year	current US$
1992	444000000
1993	805000000
1994	1303000000
1995	1840000000
1996	2078000000
1997	2936000000
1998	3245000000
1999	3017000000
2000	3830000000
2001	4015000000
2002	4336000000
2003	5622000000
2004	5932000000
2005	7716000000
2006	9692000000
2007	11010000000
2008	12458000000
2009	9048000000
2010	11591000000
2011	16709000000
2012	16087000000
2013	16320000000
2014	16042000000
2015	12836000000
2016	13171000000
2017	14559000000
2018	17017000000
2019	16101000000
2020	16340000000
2021	21560000000
2022	22381000000
2023	19669000000