Year	current US$
1992	418000000
1993	430000000
1994	316000000
1995	522000000
1996	838000000
1997	709000000
1998	842000000
1999	613000000
2000	558000000
2001	467000000
2002	587000000
2003	717000000
2004	941000000
2005	1102000000
2006	1931000000
2007	2789000000
2008	4072000000
2009	3040000000
2010	3223000000
2011	4261000000
2012	5374000000
2013	6070000000
2014	5732000000
2015	4070000000
2016	4000000000
2017	4495000000
2018	5292000000
2019	4989000000
2020	3719000000
2021	5580000000
2022	9803000000
2023	12352000000