Year	current US$
1995	1520000000
1996	1470000000
1997	1586000000
1998	1355000000
1999	1496000000
2000	1693000000
2001	1535000000
2002	1685000000
2003	1647000000
2004	2157000000
2005	2484000000
2006	2720000000
2007	3150000000
2008	3705000000
2009	3489000000
2010	4052000000
2011	4967000000
2012	5458000000
2013	5065000000
2014	4930000000
2015	3913000000
2016	4038000000
2017	3805000000
2018	4537000000
2019	4589000000
2020	1248000000