Year	current US$
1995	582000000
1996	590000000
1997	618000000
1998	556000000
1999	492000000
2000	551000000
2001	533000000
2002	562000000
2003	620000000
2004	765000000
2005	828000000
2006	919000000
2007	912000000
2008	986000000
2009	950000000
2010	998000000
2011	1127000000
2012	1014000000
2013	938000000
2014	971000000
2015	915000000
2016	790000000
2017	865000000
2018	845000000
2019	992000000
2020	765000000