Year	Percent
2005-01-01	6.27657931066667
2006-01-01	6.49979149725000
2007-01-01	6.69808890083334
2008-01-01	7.31436346216667
2009-01-01	9.68650359833334
2010-01-01	9.50573077650000
2011-01-01	9.32403757833334
2012-01-01	8.85978352550000
2013-01-01	8.66448256225000
2014-01-01	8.81348327600000
2015-01-01	7.83496688316667
2016-01-01	7.11806186375000
2017-01-01	6.26462510750000