Year	Percent
1996-01-01	26.988400000000000
1997-01-01	20.859900000000000
1998-01-01	14.007000000000000
1999-01-01	14.007000000000000
2000-01-01	23.181800000000000
2001-01-01	15.645400000000000
2002-01-01	16.109400000000000
2003-01-01	6.429810000000000
2004-01-01	9.604250000000000
2005-01-01	18.302600000000000
2006-01-01	18.801200000000000
2007-01-01	48.315400000000000
2008-01-01	29.542700000000000
2009-01-01	38.051600000000000
2010-01-01	29.065200000000000
2011-01-01	28.188000000000002
2012-01-01	30.059800000000000
2013-01-01	32.674200000000000
2014-01-01	32.674200000000000
2015-01-01	40.106400000000000
2016-01-01	34.771400000000000