Year	Percent
2005-01-01	46.9035203250369
2006-01-01	44.7663889290912
2007-01-01	43.4567889433610
2008-01-01	42.1415409883282
2009-01-01	41.5635363450183
2010-01-01	39.3867378452325
2011-01-01	37.8509840357187
2012-01-01	35.0317035098082
2013-01-01	34.1296135415343
2014-01-01	33.3781944701417
2015-01-01	33.4788920474942
2016-01-01	33.5795344207859
2017-01-01	32.0235736874446