Year	Percent
1998-01-01	44.20000000000000
1999-01-01	61.90000000000000
2000-01-01	59.80000000000000
2001-01-01	47.10000000000000
2002-01-01	64.20000000000000
2003-01-01	88.60000000000000
2004-01-01	88.10000000000000
2005-01-01	88.70000000000000
2006-01-01	89.70000000000000
2007-01-01	86.80000000000000
2008-01-01	79.80000000000000
2009-01-01	83.60000000000000
2010-01-01	83.79390000000000
2011-01-01	79.38190000000000
2012-01-01	75.18590000000000
2013-01-01	76.28710000000000
2014-01-01	73.88600000000001
2015-01-01	74.58540000000000
2016-01-01	77.42930000000000