Year	Percent
1995	0.59589
1996	0.51869
1997	0.61544
1998	0.79605
1999	0.94798
2000	0.98878
2001	0.96386
2002	1.2976
2003	1.60058
2004	1.75349
2005	1.46472
2006	1.39778
2007	1.09768
2008	0.84098
2009	1.05758
2010	0.96633
2011	0.72378
2012	0.81015
2013	0.67948
2014	0.56264
2015	0.5255
2016	0.47047
2017	0.3676