Year	Percent
2005-01-01	8.67347275843500
2006-01-01	7.66954991729243
2007-01-01	6.70085439827971
2008-01-01	7.41930130105392
2009-01-01	8.61754152283860
2010-01-01	7.73698182283707
2011-01-01	6.70329709574001
2012-01-01	6.21971466508103
2013-01-01	5.09875889940875
2014-01-01	5.16100315126267
2015-01-01	5.39722364911448
2016-01-01	5.75852498540777
2017-01-01	5.91941104389416