Year	current US$
1995	2058000000
1996	2172000000
1997	1957000000
1998	1940000000
1999	1879000000
2000	2091000000
2001	2089000000
2002	1792000000
2003	1861000000
2004	1957000000
2005	1931000000
2006	2094000000
2007	2350000000
2008	2619000000
2009	2270000000
2010	2527000000
2011	3005000000
2012	2866000000
2013	2939000000
2014	3072000000
2015	2468000000
2016	2322000000
2017	2402000000
2018	2387000000
2019	2343000000
2020	826000000