Year	current US$
1995	440000000
1996	409000000
1997	421000000
1998	447000000
1999	497000000
2000	526000000
2001	492000000
2002	508000000
2003	573000000
2004	606000000
2005	693000000
2006	802000000
2007	929000000
2008	955000000
2009	829000000
2010	787000000
2011	805000000
2012	699000000
2013	980000000
2014	1062000000
2015	881000000
2016	773000000
2017	908000000
2018	1031000000
2019	1094000000
2020	396000000