Year	Percent Change
1971-01-01	4.3780198855334300
1972-01-01	3.1601331716202500
1973-01-01	5.5383322246762000
1974-01-01	13.3146232107906000
1975-01-01	13.4713379356871000
1976-01-01	8.1250574556817000
1977-01-01	8.3494789669157600
1978-01-01	4.1785884320305500
1979-01-01	6.8806519445593900
1980-01-01	10.5975402992830000
1981-01-01	13.4145953738576000
1982-01-01	11.4557796224697000
1983-01-01	1.7244853163845800
1984-01-01	2.2608958188005800
1985-01-01	3.0536057954766400
1986-01-01	3.4870925082354800
1987-01-01	1.6206485540282400
1988-01-01	2.5773186831692600
1989-01-01	3.6396620584931200
1990-01-01	4.4972642024984200
1991-01-01	4.7929894623308400
1992-01-01	-0.5591256613384300
1993-01-01	-1.4204742070503400
1994-01-01	-2.0136490815990900
1995-01-01	1.0857207960556200
1996-01-01	-0.0944683466263638
1997-01-01	1.4395153266859800
1998-01-01	0.6129357018954440
1999-01-01	-1.8085866486021700
2000-01-01	0.3599829455229220
2001-01-01	0.0350386814671966
2002-01-01	-0.5983590328757320
2003-01-01	1.0144455844123700
2004-01-01	1.9596194190503800
2005-01-01	0.0999994692751429
2006-01-01	2.0806658285914200
2007-01-01	1.4140669953324900
2008-01-01	0.5863073601058990
2009-01-01	0.4746073635637170
2010-01-01	-0.2071284268949610