Year	Percent
1996-01-01	1.060
1997-01-01	0.995
1998-01-01	1.030
1999-01-01	1.085
2000-01-01	1.060
2001-01-01	0.940
2002-01-01	0.970
2003-01-01	1.280
2004-01-01	1.465
2005-01-01	1.530
2006-01-01	1.600
2007-01-01	1.690
2008-01-01	1.420
2009-01-01	1.100
2010-01-01	1.230
2011-01-01	1.330
2012-01-01	1.270
2013-01-01	1.215
2014-01-01	1.185
2015-01-01	1.015