Year	constant 2015 US$
2000	4822456199.966611
2001	5095185721.460686
2002	5404754551.0889435
2003	5633710600.57669
2004	6063597696.05806
2005	6591042124.757608
2006	6914632433.1816225
2007	7609413270.960199
2008	8105589019.284694
2009	8878854438.354687
2010	9291616983.67817
2011	9939662306.532242
2012	10874805016.858896
2013	11823361377.342167
2014	12845660872.328306
2015	13784824955.512712
2016	14736038587.95491