Year	current US$
1995	213000000
1996	235000000
1997	250000000
1998	256000000
1999	276000000
2000	261000000
2001	256000000
2002	244000000
2003	305000000
2004	316000000
2005	344000000
2006	385000000
2007	377000000
2008	305000000
2009	240000000
2010	228000000
2011	246000000
2012	286000000
2013	262000000
2014	212000000
2015	238000000
2016	329000000
2017	371000000
2018	332000000
2019	335000000
2020	110000000