Year	constant 2010 US$
2006	21925.6934035801
2007	25944.0778090193
2008	30314.7898492521
2009	28747.9798982779
2010	31079.7867383362
2011	32468.5299002001
2012	33595.477365254
2013	34985.0726920039
2014	33240.9987162911
2015	30097.7315180485
2016	27581.011842642
2017	26482.909731979
2018	25809.5295804196