Year	Percent
1994-01-01	69.32
1995-01-01	74.52
1996-01-01	79.99
1997-01-01	87.77
1998-01-01	94.40
1999-01-01	103.41
2000-01-01	101.20
2001-01-01	93.75
2002-01-01	88.63
2003-01-01	94.68
2004-01-01	98.87
2005-01-01	106.62
2006-01-01	107.91
2007-01-01	105.04
2008-01-01	89.79
2009-01-01	101.61
2010-01-01	102.13
2011-01-01	100.64
2012-01-01	107.44
2013-01-01	126.77
2014-01-01	134.06
2015-01-01	135.48
2016-01-01	139.64