Year	Percent
1996-01-01	59.0909
1997-01-01	58.2152
1998-01-01	53.5904
1999-01-01	54.5566
2000-01-01	51.3469
2001-01-01	53.8269
2002-01-01	47.0257
2003-01-01	50.0000
2004-01-01	54.5436
2005-01-01	54.3683
2006-01-01	46.2990
2007-01-01	41.5596
2008-01-01	43.7500
2009-01-01	43.7500
2010-01-01	39.3531
2011-01-01	38.3645
2012-01-01	45.8333