Year	constant 2010 US$
2004	16747970.7509237
2005	15214982.1973484
2006	15629955.8737231
2007	16905490.8204738
2008	17015134.499022
2009	19338016.0725929
2010	24820200
2011	25674557.5690067
2012	28173840.0423821
2013	29124759.5718322
2014	28692523.4220822
2015	28828735.1260596
2016	28179234.5653119
2017	29669876.1138883