Year	Percent
2003-01-01	78.6242120780224
2004-01-01	77.7736096206203
2005-01-01	79.2810422056495
2006-01-01	80.1207527280474
2007-01-01	80.7832775742030
2008-01-01	79.4892751271616
2009-01-01	74.5198326976008
2010-01-01	74.2934949773133
2011-01-01	74.1736232669225
2012-01-01	75.0884578150249
2013-01-01	76.3397812526724