Year	Percent
1996-01-01	48.9995
1997-01-01	47.0510
1998-01-01	45.2949
1999-01-01	48.5370
2000-01-01	43.9472
2001-01-01	40.1542
2002-01-01	40.5091
2003-01-01	37.9366
2004-01-01	34.1000
2005-01-01	29.7126
2006-01-01	27.5078
2007-01-01	31.1449
2008-01-01	36.5263
2009-01-01	34.0441
2010-01-01	35.4370
2011-01-01	36.3977
2012-01-01	35.1800
2013-01-01	35.4650
2014-01-01	35.0556