Year	Percent
1996-01-01	32.2785
1997-01-01	36.4766
1998-01-01	46.9746
1999-01-01	46.3228
2000-01-01	61.1393
2001-01-01	46.5445
2002-01-01	45.4750
2003-01-01	45.1047
2004-01-01	34.8247
2005-01-01	50.0974
2006-01-01	39.4921
2007-01-01	35.2947
2008-01-01	43.2133
2009-01-01	50.1976
2010-01-01	48.4562
2011-01-01	63.5525
2012-01-01	70.3278
2013-01-01	69.4387
2014-01-01	70.2824