Year	Percent
1998-01-01	5.2000000000000000
1999-01-01	4.6000000000000000
2000-01-01	4.1000000000000000
2001-01-01	2.3000000000000000
2002-01-01	1.8000000000000000
2003-01-01	1.3000000000000000
2004-01-01	0.9000000000000000
2005-01-01	0.5000000000000000
2006-01-01	0.3000000000000000
2007-01-01	0.3000000000000000
2008-01-01	0.9000000000000000
2009-01-01	1.1000000000000000
2010-01-01	0.9217840000000000
2011-01-01	0.8420580000000000
2012-01-01	0.7945560000000000
2013-01-01	0.7760520000000001
2014-01-01	0.7242640000000000
2015-01-01	0.7548040000000000
2016-01-01	0.7832620000000000