Year	current US$
1995	906000000
1996	1304000000
1997	1816000000
1998	1567000000
1999	620000000
2000	591000000
2001	831000000
2002	881000000
2003	1795000000
2005	240000000
2006	3279000000
2007	5590000000
2008	9777000000
2009	5012000000
2010	5566000000
2011	6598000000
2012	6141000000
2013	5864000000
2014	5811000000
2015	5605000000
2016	1079000000
2017	5797000000
2018	9569000000
2019	13509000000
2020	5548000000