Year	Percent
1996-01-01	48.1551
1997-01-01	57.4962
1998-01-01	36.1807
1999-01-01	52.3046
2000-01-01	50.0000
2001-01-01	48.3381
2002-01-01	50.9003
2003-01-01	52.5387
2004-01-01	45.5528
2005-01-01	40.8066
2006-01-01	40.1623
2007-01-01	36.8905
2008-01-01	31.5244
2009-01-01	46.7674
2010-01-01	49.3864
2011-01-01	47.4761
2012-01-01	50.3145
2013-01-01	50.6257
2014-01-01	48.5939