Year	current US$
2005	2874248712.847273
2006	3111185349.176027
2007	4340437080.243062
2008	4827186339.599222
2009	5217263152.740908
2010	6291735947.697745
2011	7147946036.8152075
2012	8276450643.326058
2013	8846369537.70578
2014	8450573981.046115
2015	8599864332.407518
2016	7749799752.101537
2017	5856845464.619836
2018	8216906278.819821
2019	6693435799.1521845