Year	%
1986	90.62458
1987	88.60238
1993	89.403
1994	89.85089
1995	94.62965
1998	94.76709
2004	99.79695
2005	96.9782
2006	97.58784
2007	93.09685
2008	89.25187
2009	93.96378
2010	89.6108
2011	100
2014	91.95012