Year	current US$
2000	274229800
2001	307796500
2002	392651900
2003	269711500
2004	606566300
2005	560772700
2006	922573400
2007	1029244000
2008	593614500
2009	269879600
2010	382397400
2011	522939000
2012	895554700
2013	1060553000
2014	893908100
2015	618531000
2016	702000000
2017	797846200
2018	849000000