Year	Percent
2000-01-01	42.2188776681597
2001-01-01	42.5237042533504
2002-01-01	42.8259840564773
2003-01-01	43.0300411283339
2004-01-01	43.3868507836336
2005-01-01	43.7391592536540
2006-01-01	43.9428816404160
2007-01-01	43.8679007452666
2008-01-01	44.0867366647109
2009-01-01	43.5083490611751
2010-01-01	43.2843004684712
2011-01-01	43.1799787178003
2012-01-01	43.3031137905324
2013-01-01	43.7258101616905
2014-01-01	44.4750106696317