Year	current US$
1995	2440000000
1996	2625000000
1997	2619000000
1998	2377000000
1999	2617000000
2000	2677000000
2001	2449000000
2002	2677000000
2003	3097000000
2004	4035000000
2005	4404000000
2006	4756000000
2007	5598000000
2008	5940000000
2009	3942000000
2010	5293000000
2011	6596000000
2012	7148000000
2013	6622000000
2014	5543000000
2015	4881000000
2016	4879000000
2017	5240000000
2018	5486000000
2019	5377000000
2020	1166000000