Year	Percent
2000-01-01	2.9802900000000000
2001-01-01	2.9650700000000000
2002-01-01	2.8075099999999997
2003-01-01	4.8145300000000000
2004-01-01	7.4083200000000000
2005-01-01	6.2635300000000000
2006-01-01	4.2868400000000000
2007-01-01	4.2666500000000000
2008-01-01	4.2217000000000000
2009-01-01	4.7230500000000000
2010-01-01	4.8229200000000000
2011-01-01	4.3841800000000010
2012-01-01	4.0828600000000000
2013-01-01	3.6655400000000000
2014-01-01	3.9885300000000004
2015-01-01	4.4773700000000000
2016-01-01	4.0374500000000000