Year	Percent
1996-01-01	32.644600000000000
1997-01-01	37.024200000000000
1998-01-01	36.496300000000000
1999-01-01	37.908500000000000
2000-01-01	31.419900000000000
2001-01-01	30.303000000000000
2002-01-01	28.609600000000000
2003-01-01	27.352300000000000
2004-01-01	24.394000000000002
2005-01-01	22.716600000000000
2006-01-01	23.027700000000000
2007-01-01	24.295900000000000
2008-01-01	28.886300000000000
2009-01-01	31.037200000000000
2010-01-01	30.897300000000000
2011-01-01	30.658300000000000
2012-01-01	32.227900000000000
2013-01-01	34.389500000000000
2014-01-01	33.793100000000000