Year	current US$
1995	1635000000
1996	2960000000
1997	2355000000
1998	1908000000
1999	1493000000
2000	1276000000
2001	1386000000
2002	1597000000
2003	1934000000
2004	2280000000
2005	2405000000
2006	2765000000
2007	3768000000
2008	4884000000
2009	4255000000
2010	4252000000
2011	4789000000
2012	4472000000
2013	4637000000
2014	5133000000
2015	4772000000
2016	4920000000
2017	5465000000
2018	5972000000
2019	5889000000
2020	3430000000