Year	Percent
2000-01-01	2.79137628874921
2001-01-01	2.50984620576936
2002-01-01	2.58127521192464
2003-01-01	2.50868398390889
2004-01-01	2.37845359409530
2005-01-01	2.42328606365912
2006-01-01	2.75832669386846
2007-01-01	2.71107972782342
2008-01-01	2.90556116344375
2009-01-01	3.87006483194736
2010-01-01	3.98736494348825
2011-01-01	4.11535615703625
2012-01-01	4.04850208263782
2013-01-01	3.87486139486439
2014-01-01	3.14711610957553