Year	Percent
1996-01-01	0.1399020000000000
1997-01-01	1.0245500000000000
1998-01-01	3.2085500000000000
1999-01-01	3.4272099999999996
2000-01-01	2.1944100000000000
2001-01-01	1.5555400000000000
2002-01-01	1.1743700000000001
2003-01-01	1.3072000000000000
2004-01-01	1.7838599999999998
2005-01-01	1.2114300000000000
2006-01-01	0.6185640000000000
2007-01-01	1.4213000000000000
2008-01-01	2.3166100000000000
2009-01-01	1.4482100000000000