Year	Percent
1994-01-01	40.164500000000000
1995-01-01	41.734800000000000
1996-01-01	43.642400000000000
1997-01-01	33.540500000000000
1998-01-01	33.333800000000000
1999-01-01	33.591500000000000
2000-01-01	31.450700000000000
2001-01-01	30.522700000000000
2002-01-01	28.985200000000000
2003-01-01	29.238500000000000
2004-01-01	29.172900000000000
2005-01-01	27.346800000000000
2006-01-01	27.721100000000000
2007-01-01	26.788500000000000
2008-01-01	25.336200000000000
2009-01-01	24.923700000000000
2010-01-01	24.273000000000003
2011-01-01	25.278600000000000
2012-01-01	24.747900000000000
2013-01-01	26.001400000000000
2014-01-01	26.252600000000000
2015-01-01	24.017900000000000
2016-01-01	24.634300000000000