Year	%
1986	89.11178
1987	87.40837
1993	89.45978
1994	88.98483
1995	94.01904
1998	96.22214
2004	99.05025
2005	96.57825
2006	95.47376
2007	92.92521
2008	90.63901
2009	92.64234
2010	89.48867
2011	98.34591
2014	91.44209