Year	Percent
1995-01-01	44.1691749925000
1996-01-01	44.5024561025000
1997-01-01	44.3460417425000
1998-01-01	44.6969776325000
1999-01-01	45.7230933700000
2000-01-01	46.8229368475000
2001-01-01	46.5016869950000
2002-01-01	46.3252616625000
2003-01-01	46.6995165000000
2004-01-01	47.1516798775000
2005-01-01	48.6165825475000
2006-01-01	49.3937215950000
2007-01-01	50.6503074675000
2008-01-01	51.7119535350000
2009-01-01	52.1590395975000
2010-01-01	53.1812648350000
2011-01-01	53.7036599325000
2012-01-01	58.3333333333333
2013-01-01	58.9916666666667
2014-01-01	60.1833333333333
2015-01-01	60.3833333333333
2016-01-01	61.0500000000000
2017-01-01	61.2416666666667