Year	%
1993	99.01642
1994	96.10732
1995	100
1996	99.7358
1998	99.98797
1999	100
2000	99.76423
2001	100
2002	99.79071
2003	97.47053
2004	100
2005	99.961
2006	99.87063
2007	100
2010	97.24498
2011	98.84643
2012	98.64231
2013	98.44005
2014	98.76852
2015	98.25375
2016	98.44134
2017	98.70679