Year	constant 2015 US$
2000	1225856776.7644022
2001	1316423075.4443736
2002	1288844012.0275319
2003	1323965011.3217258
2004	1736141798.679645
2005	2017934973.9608195
2006	2389961465.7506695
2007	2767169083.9379745
2008	3371823200.4786973
2009	3690359338.1828866
2010	4031385444.622219
2011	4720752355.683284
2012	6185601811.699414
2013	7013668326.192831
2014	7188519077.535248
2015	7479510329.8820715
2016	7819977640.10528