Year	constant 2011 international $
2007	8242.63644554104
2008	8240.5539333033
2009	7729.98068638674
2010	7714.1937288492
2011	7820.93780186175
2012	7886.27112753602
2013	7801.72531336513
2014	7806.20082530708
2015	7750.58411392336
2016	7721.13168714546
2017	7869.91738661902