Year	current US$
1995	3691000000
1996	3420000000
1997	3156000000
1998	3236000000
1999	3698000000
2000	3671000000
2001	4003000000
2002	4791000000
2003	5271000000
2004	5652000000
2005	5293000000
2006	5562000000
2007	5978000000
2008	6281000000
2009	5617000000
2010	5704000000
2011	6366000000
2012	6135000000
2013	6490000000
2014	7617000000
2015	6685000000
2016	7494000000
2017	8508000000
2018	9097000000