Year	%
1992	96.55219
1993	99.92915
1996	99.42802
1997	100
1998	99.93138
2000	99.00446
2001	99.54621
2002	99.84575
2003	99.61342
2004	99.92513
2005	99.45163
2006	99.39087
2007	99.52404
2008	99.47355
2009	99.51706
2010	99.31644
2011	99.23851
2012	99.16996
2013	99.20837
2014	99.22107
2016	99.05959