Year	%
1993	94.3603
1995	49.86717
1996	92.64089
1998	98.20932
1999	99.09228
2000	96.99131
2001	97.27987
2002	97.64424
2003	99.424
2004	98.84785
2005	98.06025
2006	99.43002
2007	99.11716
2008	98.47679
2009	98.73429
2010	98.22198
2011	99.68311
2012	98.04272
2013	100
2014	98.80717
2015	99.07956
2016	100
2017	98.35605