Year	constant 2010 US$
2005	2270.37704199059
2006	3640.56439657842
2007	3814.76769577355
2008	4025.13841727633
2009	3904.11712186484
2010	4043.17466560787
2011	4021.38458108118
2012	4109.89812396174
2013	4641.10447000167
2014	4612.06281971506
2015	4514.4746503436
2016	4464.5379697362
2017	4475.52280581148
2018	4536.36246189004