Year	Percent
1995	-4.74265
1996	-9.016
1997	-9.0421
1998	-12.06601
1999	-9.8091
2000	-7.9877
2001	-10.382
2002	-10.13847
2003	-12.54329
2004	-15.55064
2005	-14.48259
2006	-20.67203
2007	-19.02105
2008	-12.91674
2009	-1.62066
2010	-1.47434
2011	-4.97786
2012	-4.44683
2013	-3.54975
2014	-1.44544
2015	-0.51033
2016	0.8966
2017	-1.32907