Year	Percent
1996-01-01	30.209500000000000
1997-01-01	24.136200000000000
1998-01-01	35.304900000000000
1999-01-01	34.275600000000000
2000-01-01	32.909000000000000
2001-01-01	31.604300000000000
2002-01-01	31.521500000000000
2003-01-01	29.868000000000002
2004-01-01	28.040300000000000
2005-01-01	22.544100000000000
2006-01-01	25.330300000000000
2007-01-01	25.697500000000000
2008-01-01	27.645700000000000
2009-01-01	26.348900000000000
2010-01-01	23.671200000000000
2011-01-01	21.830900000000000
2012-01-01	25.389400000000000
2013-01-01	22.420100000000000
2014-01-01	24.402900000000000