Year	Percent
1998-01-01	11.7000
1999-01-01	11.8000
2000-01-01	14.3000
2001-01-01	8.8000
2002-01-01	18.4000
2003-01-01	18.1000
2004-01-01	17.8000
2005-01-01	21.5000
2006-01-01	22.9000
2007-01-01	22.5000
2008-01-01	23.0000
2009-01-01	21.0000
2010-01-01	20.2382
2011-01-01	17.2218
2012-01-01	15.9307
2013-01-01	15.2843
2014-01-01	13.5696
2015-01-01	14.6850
2016-01-01	16.2049