Year	current US$
2002	512000000
2003	471000000
2004	529000000
2005	475000000
2006	506000000
2007	608000000
2008	695000000
2009	714000000
2010	883000000
2011	1064000000
2012	1155000000
2013	1239000000
2014	1385000000
2015	1435000000
2016	1500000000
2017	1702000000
2018	1941000000
2019	2034000000
2020	886000000