Year	Percent
2005-01-01	5.97090318330231
2006-01-01	5.72726965947661
2007-01-01	5.22500891423152
2008-01-01	5.52039613981985
2009-01-01	7.81756414004440
2010-01-01	6.06629128881649
2011-01-01	4.96576317087652
2012-01-01	4.40100534001672
2013-01-01	4.53240543690347
2014-01-01	5.32680771902265
2015-01-01	5.29729406711655
2016-01-01	5.74230762410605
2017-01-01	5.92263496797688