Year	constant 2010 US$
2006	459.393956036562
2007	464.723479992365
2008	464.761750363398
2009	487.545907035008
2010	510.535936742981
2011	518.326927767135
2012	534.168755029993
2013	551.910762308311
2014	578.529520766835
2015	595.979497470971
2016	595.72027184511