Year	Percent
1996-01-01	20.345500000000000
1997-01-01	22.903200000000000
1998-01-01	21.214800000000000
1999-01-01	21.131200000000000
2000-01-01	25.308000000000003
2001-01-01	21.799200000000000
2002-01-01	29.308700000000000
2003-01-01	30.489700000000000
2004-01-01	33.777700000000000
2005-01-01	26.000400000000000
2006-01-01	25.240900000000000
2007-01-01	23.262400000000000
2008-01-01	21.836400000000000
2009-01-01	24.133100000000000
2010-01-01	24.945800000000000
2011-01-01	25.629500000000000
2012-01-01	25.817100000000000
2013-01-01	25.897700000000000
2014-01-01	25.306600000000000