Year	Percent
1995	98.7
1996	98.8
2000	98
2001	98.2
2002	99.2
2003	98.5
2004	98.7
2005	99.7
2006	88.9
2007	99.8
2008	99
2009	99
2010	99.7
2011	99
2012	99
2013	99.9
2014	98.4