Year	Percent
1997-01-01	0.6367010000000001
1998-01-01	0.5639080000000000
1999-01-01	0.5662680000000000
2000-01-01	0.6595300000000001
2001-01-01	0.8358620000000001
2002-01-01	1.5714500000000000
2003-01-01	3.0228200000000003
2004-01-01	3.4489000000000000
2005-01-01	2.7327100000000000
2006-01-01	1.0044600000000001
2007-01-01	2.6049400000000000
2008-01-01	3.0598300000000000
2009-01-01	2.4622599999999997
2010-01-01	2.6146700000000003
2011-01-01	2.4863100000000000
2012-01-01	2.8345800000000000
2013-01-01	2.2934600000000000
2014-01-01	2.8068400000000002
2015-01-01	2.8018700000000000
2016-01-01	2.9225200000000000