Year	current US$
1995	5865000000
1996	6357000000
1997	5855000000
1998	4524000000
1999	3810000000
2000	3417000000
2001	3595000000
2002	3440000000
2003	3286000000
2004	5086000000
2005	5887000000
2006	7645000000
2007	8339000000
2008	10683000000
2009	7883000000
2010	8888000000
2011	8672000000
2012	8911000000
2013	8916000000
2014	9177000000
2015	8285000000
2016	8509000000
2017	9420000000
2018	10367000000
2019	10161000000
2020	5547000000