Year	%
1995	99.51973
2000	97.24541
2006	98.38603
2007	98.21509
2008	99.22479
2009	98.08978
2010	99.18615
2011	99.48943
2012	99.75281
2013	99.80782
2014	99.08036
2015	98.06952
2016	98.17323
2017	98.53003