Year	Percent
2000-01-01	1.15
2001-01-01	1.23
2002-01-01	1.29
2003-01-01	1.29
2004-01-01	1.29
2005-01-01	1.46
2006-01-01	1.72
2007-01-01	1.96
2008-01-01	2.13
2009-01-01	2.31
2010-01-01	2.48
2011-01-01	2.62
2012-01-01	2.69
2013-01-01	2.75
2014-01-01	2.77
2015-01-01	2.45