Year	Percent
1983-01-01	3.50241000000000000
1984-01-01	3.00592999999999980
1985-01-01	3.63142000000000000
1986-01-01	3.75874000000000000
1987-01-01	2.81824000000000030
1988-01-01	4.27166000000000000
1989-01-01	3.42835000000000000
1990-01-01	2.11675999999999980
1991-01-01	2.27336000000000000
1992-01-01	1.64917999999999990
1993-01-01	1.27780000000000000
1994-01-01	1.07792000000000000
1995-01-01	0.92595600000000000
1996-01-01	0.77665100000000000
1997-01-01	0.58716899999999990
1998-01-01	0.98412099999999990
1999-01-01	0.95518300000000000
2000-01-01	0.68918800000000000
2001-01-01	0.61080100000000000
2002-01-01	0.54571200000000000
2003-01-01	0.56430000000000000
2004-01-01	0.56174099999999990
2005-01-01	0.35617400000000000
2006-01-01	0.34037600000000000
2007-01-01	0.34601400000000000
2008-01-01	0.26131100000000000
2009-01-01	0.31458400000000003
2010-01-01	0.20861400000000000