Year	Percent
1996-01-01	15.4619000000000000
1997-01-01	35.0609000000000000
1998-01-01	23.6213000000000000
1999-01-01	11.6586000000000000
2000-01-01	48.4044000000000000
2001-01-01	26.5133000000000000
2002-01-01	17.4467000000000000
2003-01-01	15.1420000000000010
2004-01-01	7.6305800000000000
2005-01-01	4.6687100000000000
2006-01-01	4.2274500000000000
2007-01-01	4.6162000000000000
2008-01-01	1.6297000000000000
2009-01-01	1.1483600000000000
2010-01-01	1.8209700000000000
2011-01-01	4.2186900000000005
2012-01-01	3.0364800000000000