Year	Percent
2005-01-01	1.80096191854868
2006-01-01	1.82857431340747
2007-01-01	1.86309488454335
2008-01-01	2.07780345274674
2009-01-01	2.94938850903179
2010-01-01	2.97090579159489
2011-01-01	2.89080366874049
2012-01-01	2.75461651938073
2013-01-01	2.74192322184098
2014-01-01	2.67673795016440
2015-01-01	2.37670884951406
2016-01-01	2.15977429032839
2017-01-01	1.86798410483183