Year	Percent
2000	0.57339
2001	0.56217
2002	0.69635
2003	0.65412
2004	0.5063
2005	0.39409
2006	0.32797
2007	0.43904
2008	0.39211
2009	0.43835
2010	0.38399
2011	1.08199
2012	0.3013
2013	0.2102
2014	1.81674
2015	1.18984
2016	-1.22557
2017	1.29053