Year	Percent
1998-01-01	112.620000000000000
1999-01-01	25.089000000000002
2000-01-01	19.251500000000000
2001-01-01	13.236300000000000
2002-01-01	11.979300000000000
2003-01-01	16.728300000000000
2004-01-01	15.914400000000000
2005-01-01	50.538200000000000
2006-01-01	20.477400000000000
2007-01-01	33.352100000000000
2008-01-01	17.925700000000000
2009-01-01	16.705300000000000
2010-01-01	13.378300000000000
2011-01-01	12.104800000000000
2012-01-01	9.360840000000000