Year	Percent
2005-01-01	88.2820097816151
2006-01-01	88.6510694138309
2007-01-01	89.0287485751476
2008-01-01	88.7235376506274
2009-01-01	86.3003686614029
2010-01-01	86.8805309119330
2011-01-01	88.2862176656075
2012-01-01	88.4385063818643
2013-01-01	88.1443727122836
2014-01-01	86.8299597701517
2015-01-01	86.9163196862253
2016-01-01	86.1767040065671
2017-01-01	85.8629974938548