Year	current US$
1995	697000000
1996	665000000
1997	681000000
1998	458000000
1999	402000000
2000	425000000
2001	449000000
2002	396000000
2003	479000000
2004	539000000
2005	923000000
2006	1308000000
2007	1541000000
2008	2174000000
2009	1469000000
2010	1637000000
2011	1965000000
2012	1832000000
2013	2005000000
2014	2505000000
2015	2237000000
2016	2568000000
2017	4377000000
2018	5328000000
2019	5996000000
2020	3022000000