Year	constant 2010 US$
2008	4229982623.05882
2009	4287876258.03911
2010	4700264215.08035
2011	4854214658.57758
2012	5113209810.20026
2013	5360623023.29868
2014	5652167013.24697
2015	5727032114.98843
2016	6210959782.29667