Year	Percent
1996-01-01	9.236620000000000
1997-01-01	17.952500000000000
1998-01-01	15.773000000000000
1999-01-01	26.128200000000000
2000-01-01	14.780999999999999
2001-01-01	15.039000000000001
2002-01-01	13.188300000000000
2003-01-01	7.502960000000001
2004-01-01	8.987480000000000
2005-01-01	10.119600000000000
2006-01-01	22.738900000000000
2007-01-01	9.655720000000000
2008-01-01	6.498660000000000
2009-01-01	7.547560000000001
2010-01-01	5.961000000000000
2011-01-01	4.830620000000000
2012-01-01	4.372600000000000