Year	%
1994	83.84726
1995	88.20989
1996	88.73774
1997	88.23648
1998	87.54325
1999	88.66432
2000	89.72249
2001	90.83807
2002	92.01537
2003	93.22222
2004	93.75826
2005	94.65864
2006	96.04828
2007	97.00642
2008	97.29809
2009	97.18464
2010	97.17768
2011	96.78711
2012	96.313
2013	95.5542
2014	96.98633
2015	97.05851
2016	97.18403
2017	97.25552