Year	Percent
1993-01-01	3.2123100000000000
1994-01-01	3.2123100000000000
1995-01-01	2.7954700000000000
1996-01-01	2.0631400000000000
1997-01-01	2.2478700000000003
1998-01-01	3.1653400000000000
1999-01-01	12.1258000000000000
2000-01-01	12.1258000000000000
2001-01-01	4.1247800000000000
2002-01-01	22.1199000000000000
2003-01-01	23.1495000000000000
2004-01-01	3.7905599999999997
2005-01-01	1.4771900000000000
2006-01-01	3.7538600000000000
2007-01-01	3.5587900000000000
2008-01-01	2.6513600000000000
2009-01-01	1.9451800000000000
2010-01-01	2.6925300000000000
2011-01-01	2.4474400000000003
2012-01-01	1.9445500000000000