Year	%
1998	90.96276
1999	92.6301
2003	90.58478
2006	100
2008	94.63389
2009	93.37584
2010	97.47864
2011	95.25456
2012	97.22726
2013	99.20858
2014	97.68721
2015	95.07859
2016	94.31237
2017	94.8466