Year	%
1995	100
1996	93.88
1997	96.34
1998	96.48
1999	94.76
2000	94.64
2001	96.94
2002	96.93
2003	97.05
2004	96.71
2005	96.54
2006	97.14
2007	94.51
2008	96.61
2009	93.16
2010	94.36
2011	94.38
2012	94.14
2013	94.12
2014	99.03
2015	96.64
2016	96.01
2017	41.02