Year	%
2006	99.29877
2007	99.88488
2008	98.69528
2009	99.55092
2010	99.89099
2011	99.45826
2012	99.29629
2013	99.93916
2014	98.96963
2015	99.51709
2016	99.63666
2017	99.8454