Year	Percent
2001-01-01	8.1000000000000000
2002-01-01	7.9000000000000000
2003-01-01	6.5000000000000000
2004-01-01	7.1000000000000000
2005-01-01	2.4000000000000000
2006-01-01	2.3000000000000000
2007-01-01	1.6000000000000000
2008-01-01	2.2000000000000000
2009-01-01	2.7000000000000000
2010-01-01	2.1104000000000000
2011-01-01	1.6061299999999998
2012-01-01	1.3445400000000000
2013-01-01	1.1931300000000000
2014-01-01	1.2877600000000000
2015-01-01	1.3473200000000000
2016-01-01	1.7270700000000000