Year	Percent
1999-01-01	26.7000
2000-01-01	17.3000
2001-01-01	3.4000
2002-01-01	2.6000
2003-01-01	3.2000
2004-01-01	2.0000
2005-01-01	2.2000
2006-01-01	2.2000
2007-01-01	2.1000
2008-01-01	2.4000
2009-01-01	6.4000
2010-01-01	11.9177
2011-01-01	14.9736
2012-01-01	16.6263
2013-01-01	16.8785
2014-01-01	16.7465
2015-01-01	14.6121
2016-01-01	13.1731