Year	Percent
1989-01-01	2.7966100000000000
1990-01-01	2.9166700000000000
1991-01-01	1.3044600000000000
1992-01-01	0.9716520000000001
1993-01-01	0.9186530000000000
1994-01-01	1.9134400000000003
1995-01-01	1.4126400000000000
1996-01-01	1.8908200000000002
1997-01-01	2.3105599999999997
1998-01-01	3.3778300000000003
1999-01-01	2.3491100000000000
2000-01-01	2.1523500000000000
2001-01-01	3.3468699999999996
2002-01-01	3.2271799999999997
2003-01-01	3.0736600000000000
2004-01-01	2.7773400000000000
2005-01-01	2.9926700000000000
2006-01-01	2.3405299999999998
2007-01-01	2.6076700000000000
2008-01-01	2.4772500000000000
2009-01-01	1.8408600000000000
2010-01-01	2.6462700000000000