Year	Percent
2004	0.18598
2005	0.04978
2006	0.11676
2007	0.04589
2008	2.88491
2009	3.27573
2010	0.38897
2011	1.5666
2012	0.67551
2013	0.22265
2014	0.57165
2015	0.69613
2016	0.05921
2017	-0.81371