Year	%
1995	98.20247
1996	98.41565
1999	98.55891
2000	98.42178
2001	97.82749
2002	98.53069
2004	97.94154
2005	99.67278
2006	100
2007	99.69673
2008	98.86537
2009	99.76815
2011	98.58002
2012	99.95594
2013	99.66751
2014	99.57623
2015	99.81863
2016	99.5071
2017	99.68743