Year	Percent
1995-01-01	48.0913542125000
1996-01-01	48.6348156200000
1997-01-01	48.3983908275000
1998-01-01	48.7457239275000
1999-01-01	49.7905375725000
2000-01-01	50.9055548800000
2001-01-01	50.4116000700000
2002-01-01	50.1936212800000
2003-01-01	50.6116249525000
2004-01-01	51.0442205400000
2005-01-01	52.5110274200000
2006-01-01	53.3402710150000
2007-01-01	54.6374533275000
2008-01-01	55.6323314400000
2009-01-01	55.9251973750000
2010-01-01	56.9369115550000
2011-01-01	57.4663146150000
2012-01-01	62.3583333333333
2013-01-01	63.0000000000000
2014-01-01	64.2333333333333
2015-01-01	64.5583333333333
2016-01-01	65.2000000000000
2017-01-01	65.6500000000000