Year	Percent
2000	-14.29522
2001	-23.56248
2002	-24.51717
2003	-16.3759
2004	-16.06556
2005	-17.52689
2006	-36.87163
2007	-42.74015
2008	-53.30077
2009	-30.7633
2010	-25.69152
2011	-21.96117
2012	-24.42109
2013	-20.0862
2014	-19.84022
2015	-18.45283
2016	-22.46237
2017	-24.16904