Year	Percent
1995	0.707
1996	0.8068
1997	1.61211
1998	0.9749
1999	0.46981
2000	0.66758
2001	2.40091
2002	7.85025
2003	1.80352
2004	2.21379
2005	2.67092
2006	1.74698
2007	3.91758
2008	1.94474
2009	-0.68916
2010	0.66451
2011	1.70702
2012	0.07238
2013	0.2161
2014	2.04247
2015	4.01519
2016	3.23436
2017	2.21834