Year	current US$
2001	1154000000
2002	1238000000
2003	1377000000
2004	1732000000
2005	1935000000
2006	2092000000
2007	2979000000
2008	3979000000
2009	3003000000
2010	4409000000
2011	5633000000
2012	7117000000
2013	8210000000
2014	7692000000
2015	4766000000
2016	5035000000
2017	5993000000
2018	7144000000
2019	6274000000
2020	2107000000