Year	Percent Change
1981-01-01	11.522850670463400
1982-01-01	9.881124996814290
1983-01-01	10.596886574885500
1984-01-01	6.400136816001880
1985-01-01	5.243393165675040
1986-01-01	8.526147259913960
1987-01-01	5.171255946191600
1988-01-01	3.614675987065300
1989-01-01	6.646636872605290
1990-01-01	11.099853937280300
1991-01-01	7.228848902341530
1992-01-01	9.164356774955430
1993-01-01	6.734003923548100
1994-01-01	1.175381774193770
1995-01-01	1.325930011624680
1996-01-01	2.774505471772140
1997-01-01	1.713180299326700
1998-01-01	-0.126329790819005
1999-01-01	-1.483803792223140
2000-01-01	-0.624099857991937
2001-01-01	2.200108347986680
2002-01-01	3.279171473642680
2003-01-01	2.363958962715690
2004-01-01	1.429670243639450
2005-01-01	2.663331263069110
2006-01-01	2.614340083235480
2007-01-01	4.205689885245040
2008-01-01	5.087958778683010
2009-01-01	0.514348677288895
2010-01-01	-2.086011710856850