Year	constant 2010 US$
2006	3995.88129224727
2007	4302.24870756843
2008	4567.89986506762
2009	4537.05163486022
2010	4408.7701656178
2011	4556.35645975277
2012	4387.98577442588
2013	4581.12155563146
2014	4582.99990038361
2015	4586.05774180893
2016	4728.73784303037
2017	4780.18741206735