Year	constant 2010 US$
2008	217489927569.861
2009	216771997705.859
2010	228277192099.721
2011	180975506681.436
2012	218470050741.352
2013	198680910325.986
2014	173609475545.83
2015	184719513548.013
2016	176838720463.631