Year	Percent
1996-01-01	35.8847
1997-01-01	34.2477
1998-01-01	33.2515
1999-01-01	26.6824
2000-01-01	30.0495
2001-01-01	35.1262
2002-01-01	45.9035
2003-01-01	48.8133
2004-01-01	50.2089
2005-01-01	48.4218
2006-01-01	47.0456
2007-01-01	46.1495
2008-01-01	43.1575
2009-01-01	41.0987
2010-01-01	42.4554
2011-01-01	38.9776
2012-01-01	32.2331
2013-01-01	31.5191
2014-01-01	27.5144