Year	%
1992	90.68047
1999	92.36511
2000	92.78954
2001	93.54164
2002	97.02662
2003	98.68106
2004	95.77691
2005	96.78744
2006	99.70042
2007	98.22003
2008	99.10714
2009	99.74202
2010	99.41051
2011	99.88275
2012	99.50956
2013	99.45253
2014	99.68535
2016	99.76819
2017	99.20049