Year	%
2006	99.57318
2007	99.78594
2008	99.36095
2009	98.41647
2010	99.94697
2011	99.73607
2012	99.6566
2013	99.87403
2014	99.49816
2015	99.57918
2016	99.54766
2017	99.69101