Year	including construction (constant 2015 US$)
2008	11206452375.199425
2009	12568508929.023375
2010	12697861531.880095
2011	12284914650.411556
2012	5882555123.17349
2013	2891565609.13482
2014	6280811960.286137
2015	3970616419.7325344