Year	Percent
1996-01-01	27.097200000000000
1997-01-01	36.014100000000000
1998-01-01	40.974200000000000
1999-01-01	34.593400000000000
2000-01-01	32.845300000000000
2001-01-01	32.399100000000000
2002-01-01	29.054000000000002
2003-01-01	25.842500000000000
2004-01-01	25.004900000000000
2005-01-01	25.224700000000000
2006-01-01	18.092200000000000
2007-01-01	19.935400000000000
2008-01-01	35.227100000000000
2009-01-01	39.221300000000000
2010-01-01	39.367200000000000
2011-01-01	38.060700000000000
2012-01-01	38.773300000000000
2013-01-01	43.591400000000000
2014-01-01	41.739900000000000