Year	%
1998	99.4096
1999	92.83255
2000	92.98846
2001	93.90467
2002	93.60063
2003	94.53922
2004	94.20222
2005	94.84917
2006	95.84968
2007	93.00695
2008	93.61153
2009	94.105
2010	93.58945
2011	95.42582
2012	97.39749
2013	98.32315
2014	89.04765
2015	94.65006
2016	97.36241
2017	95.34689