Year	current US$
2004	222414959756.664
2005	254197343504.335
2006	286499507541.258
2007	350488680550.16
2008	413335416251.412
2009	463729384757.148
2010	507670967271.461
2011	561629666682.865
2012	633688646641.65
2013	716720415779.305
2014	749154104848.947
2015	727151272351.014
2016	728517113847.893
2017	786463623331.452
2018	756818563777.546