Year	Percent
1996-01-01	21.647400000000000
1997-01-01	31.858400000000000
1998-01-01	37.075000000000000
1999-01-01	39.987700000000000
2000-01-01	35.138700000000000
2001-01-01	42.353200000000000
2002-01-01	45.607400000000000
2003-01-01	43.752900000000000
2004-01-01	45.641200000000000
2005-01-01	51.532900000000000
2006-01-01	43.436300000000000
2007-01-01	40.624000000000000
2008-01-01	35.745300000000000
2009-01-01	31.706700000000000
2010-01-01	28.714000000000002
2011-01-01	24.775800000000000
2012-01-01	24.304100000000000
2013-01-01	25.441000000000000
2014-01-01	30.083400000000000