Year	Percent
1998-01-01	45.2000
1999-01-01	51.4000
2000-01-01	57.0000
2001-01-01	57.9000
2002-01-01	50.8000
2003-01-01	47.3000
2004-01-01	83.5000
2005-01-01	65.1000
2006-01-01	57.1000
2007-01-01	64.8000
2008-01-01	43.6000
2009-01-01	32.0000
2010-01-01	39.1173
2011-01-01	45.8032
2012-01-01	48.6307
2013-01-01	51.7257
2014-01-01	59.3871
2015-01-01	69.3059
2016-01-01	72.7258