Year	Percent
1997-01-01	1.0038200000000002
1998-01-01	1.2305900000000000
1999-01-01	0.9873770000000001
2000-01-01	1.0832300000000000
2001-01-01	1.2188100000000000
2002-01-01	1.4529100000000001
2003-01-01	2.1667200000000000
2004-01-01	2.2258600000000000
2005-01-01	2.4489500000000000
2006-01-01	2.0851300000000000
2007-01-01	2.0851300000000000
2008-01-01	2.0851300000000000
2009-01-01	1.2947100000000000
2010-01-01	0.6683520000000001
2011-01-01	0.6194210000000000
2012-01-01	0.6586820000000000
2013-01-01	0.2588630000000000
2014-01-01	0.2572920000000000
2015-01-01	0.5042740000000000