Year	Percent
2001-01-01	85.68230000000000
2002-01-01	83.81920000000000
2003-01-01	78.52700000000000
2004-01-01	78.19390000000000
2005-01-01	74.89020000000000
2006-01-01	60.59120000000000
2007-01-01	64.54950000000000
2008-01-01	65.91850000000000
2009-01-01	72.18950000000000
2010-01-01	76.73560000000000
2011-01-01	74.69170000000000
2012-01-01	75.54550000000000
2013-01-01	78.56550000000000
2014-01-01	79.76400000000000
2015-01-01	84.88600000000001
2016-01-01	80.74120000000000