Year	Percent
2000-01-01	3.6050000000000000
2001-01-01	3.7350000000000000
2002-01-01	3.9019999999999997
2003-01-01	3.9019999999999997
2004-01-01	3.9019999999999997
2005-01-01	3.9019999999999997
2006-01-01	3.9019999999999997
2007-01-01	3.9019999999999997
2008-01-01	3.9019999999999997
2009-01-01	3.9019999999999997
2010-01-01	3.9019999999999997
2011-01-01	3.9019999999999997
2012-01-01	3.9019999999999997
2013-01-01	6.6400000000000000
2014-01-01	8.4200000000000000
2015-01-01	9.7300000000000000
2016-01-01	8.7000000000000000