Year	current US$
1992	2216000000
1993	2279000000
1994	2350000000
1995	3650000000
1996	4560000000
1997	5645000000
1998	5795000000
1999	4835000000
2000	5457000000
2001	6353000000
2002	7709000000
2003	9803000000
2004	12387000000
2005	15548000000
2006	19373000000
2007	24412000000
2008	31099000000
2009	18304000000
2010	23403000000
2011	31773000000
2012	31965000000
2013	34806000000
2014	34359000000
2015	28154000000
2016	27376000000
2017	32258000000
2018	36502000000
2019	35759000000
2020	33329000000
2021	44488000000
2022	55095000000
2023	48436000000