Year	current US$
2002	5042000000
2003	4427000000
2004	4569000000
2005	4740000000
2006	5458000000
2007	6578000000
2008	8801000000
2009	6908000000
2010	8432000000
2011	8653000000
2012	9055000000
2013	10280000000
2014	10263000000
2015	9800000000
2016	9932000000
2017	10945000000
2018	13171000000
2019	14449000000
2020	1980000000