Year	Percent
2004-01-01	12.31240
2005-01-01	5.79181
2006-01-01	13.04820
2007-01-01	8.38632
2008-01-01	6.83758
2009-01-01	2.17435
2010-01-01	2.43234
2011-01-01	23.29450
2012-01-01	29.72000
2013-01-01	19.69750
2014-01-01	25.12000
2015-01-01	31.50340
2016-01-01	26.12010
2017-01-01	26.88750