Year	%
1995	100
1996	99.57291
1999	100
2000	100
2001	98.57284
2002	98.96487
2003	99.65455
2004	98.45373
2006	99.80379
2007	99.99781
2008	97.42558
2009	97.87568
2010	100
2011	96.62386
2012	99.05984
2013	98.87081
2014	100
2015	99.70047
2016	97.54627
2017	97.48525