Year	Percent Change
1971-01-01	6.1551217120064200
1972-01-01	6.2081646516808800
1973-01-01	6.8529730202530000
1974-01-01	12.1569097215130000
1975-01-01	18.9400919617735000
1976-01-01	11.3755182105805000
1977-01-01	8.3790556928722200
1978-01-01	9.3670856186221200
1979-01-01	9.6034263568964100
1980-01-01	11.9380622910238000
1981-01-01	12.2407017379319000
1982-01-01	11.0901505399415000
1983-01-01	8.3591982158351200
1984-01-01	5.6084987064085900
1985-01-01	3.5469419621460200
1986-01-01	2.2988599231825900
1987-01-01	1.3374931758273200
1988-01-01	1.0067986005528500
1989-01-01	1.5331341549984800
1990-01-01	3.4321188340526000
1991-01-01	2.8418818344694600
1992-01-01	1.4779685099101900
1993-01-01	1.6086333248514700
1994-01-01	-0.2175107844392840
1995-01-01	0.7184075444996890
1996-01-01	1.0720937963275200
1997-01-01	-0.0791366520692696
1998-01-01	-0.1969903319489200
1999-01-01	0.6935892543943540
2000-01-01	1.5483834221772400
2001-01-01	2.5390347003491800
2002-01-01	2.8036378594102700
2003-01-01	1.8658043494520700
2004-01-01	0.9581470310285000
2005-01-01	1.7426361061807200
2006-01-01	2.1733495868499800
2007-01-01	1.3439734994830300
2008-01-01	2.5241067728373900
2009-01-01	2.6221216701409300
2010-01-01	0.8288776584123990