Year	current US$
1995	321000000
1996	482000000
1997	439000000
1998	475000000
1999	339000000
2000	296000000
2001	289000000
2002	442000000
2003	573000000
2004	745000000
2005	844000000
2006	1060000000
2007	1533000000
2008	2240000000
2009	2100000000
2010	1944000000
2011	2187000000
2012	2140000000
2013	2367000000
2014	2428000000
2015	2126000000
2016	2240000000
2017	2411000000
2018	2622000000
2019	2587000000
2020	1224000000