Year	Percent
1990	-18.96338
1991	-3.86276
1992	-16.15007
1993	3.18602
1994	-3.77665
1995	-0.13765
1996	-6.48797
1997	-2.9638
1998	-0.30022
1999	-0.26349
2000	3.06314
2001	0.42977
2002	1.46574
2003	6.69424
2004	7.55609
2005	9.19307
2006	5.55369
2007	3.14189
2008	2.58888
2009	-0.4807
2010	3.14651
2011	1.81348
2012	-5.14956
2013	-4.28752
2014	-4.00526
2015	-1.82889
2016	-1.76136
2017	-1.02386