Year	Percent
1995	-7.00126
1996	-12.05429
1997	-14.22223
1998	-9.21207
1999	-6.65276
2000	-4.46383
2001	-15.30034
2002	-18.08014
2003	-17.58813
2004	-26.41388
2005	-19.99833
2006	-20.3331
2007	-24.29958
2008	-25.02198
2009	-15.89815
2010	-14.98891
2011	-15.39742
2012	-16.66832
2013	-10.70894
2014	-10.84706
2015	-9.75269
2016	-7.45196
2017	-8.81009