Year	Percent
1996-01-01	39.084200000000000
1997-01-01	30.935500000000000
1998-01-01	47.266400000000000
1999-01-01	44.126500000000000
2000-01-01	37.408200000000000
2001-01-01	27.958000000000002
2002-01-01	20.909400000000000
2003-01-01	22.261600000000000
2004-01-01	34.633500000000000
2005-01-01	28.728300000000000
2006-01-01	20.744400000000000
2007-01-01	18.885700000000000
2008-01-01	12.708500000000000
2009-01-01	18.145600000000000
2010-01-01	21.953900000000000
2011-01-01	20.543400000000000
2012-01-01	24.103200000000000
2013-01-01	21.404000000000000
2014-01-01	18.284700000000000
2015-01-01	22.745800000000000
2016-01-01	24.617800000000000