Year	Percent
2003-01-01	1.70022371364653
2004-01-01	2.62923351158645
2005-01-01	2.20555800617556
2006-01-01	2.49110320284698
2007-01-01	1.92140910183843
2008-01-01	2.37771627101870
2009-01-01	2.50661003534760
2010-01-01	2.09687313165590
2011-01-01	2.59768807177598
2012-01-01	2.54413065337824
2013-01-01	2.78131353146319