Year	Percent
1999-01-01	0.28252100000000000
2000-01-01	0.30392100000000000
2001-01-01	0.33060800000000000
2002-01-01	0.34405100000000000
2003-01-01	0.37119100000000000
2004-01-01	0.43335700000000000
2005-01-01	0.42098100000000005
2006-01-01	0.45557600000000004
2007-01-01	0.39940900000000000
2008-01-01	0.41771600000000000
2009-01-01	0.37455400000000000
2010-01-01	0.39353200000000000
2011-01-01	0.38658800000000000
2012-01-01	0.42450500000000000
2013-01-01	0.46973700000000000