Year	Percent
1998-01-01	17.0000
1999-01-01	16.1000
2000-01-01	13.2000
2001-01-01	14.4000
2002-01-01	15.3000
2003-01-01	12.5000
2004-01-01	11.5000
2005-01-01	11.7000
2006-01-01	13.2000
2007-01-01	14.8000
2008-01-01	18.9000
2009-01-01	22.3000
2010-01-01	22.0673
2011-01-01	18.6068
2012-01-01	19.3174
2013-01-01	19.9730
2014-01-01	35.6526
2015-01-01	28.0091
2016-01-01	31.8228