Year	current US$
1995	198000000
1996	189000000
1997	196000000
1998	185000000
1999	183000000
2000	201000000
2001	173000000
2002	170000000
2003	120000000
2004	141000000
2005	160000000
2006	184000000
2007	192000000
2008	201000000
2009	189000000
2010	178000000
2011	181000000
2012	161000000
2013	162000000
2014	147000000
2015	597000000
2016	884000000
2017	878000000
2018	863000000
2019	917000000