Year	Percent Change
1971-01-01	8.8046149185347100
1972-01-01	6.3269907644110900
1973-01-01	7.3103270696344300
1974-01-01	9.0654386750018600
1975-01-01	6.4000155587395400
1976-01-01	2.1706162666062400
1977-01-01	3.4934637876151400
1978-01-01	3.6906822316836600
1979-01-01	5.5147394102932100
1980-01-01	6.3285520787681400
1981-01-01	4.5803464144858200
1982-01-01	4.3574929013597600
1983-01-01	0.8058030471122150
1984-01-01	0.7737099408836620
1985-01-01	0.8546377356764760
1986-01-01	3.2265432403871500
1987-01-01	2.9256849102959600
1988-01-01	0.4482117868493680
1989-01-01	0.5145845180190980
1990-01-01	2.4524615329714600
1991-01-01	3.6474772135314900
1992-01-01	7.5624803796803100
1993-01-01	4.5232232542817000
1994-01-01	0.1705800693478280
1995-01-01	1.9149496305502900
1996-01-01	0.8182685046249640
1997-01-01	-1.7290716201678000
1998-01-01	-0.0209389300950018
1999-01-01	0.5382198953018810
2000-01-01	-0.0475466424595208
2001-01-01	0.5343826727965870
2002-01-01	0.4024946237584970
2003-01-01	0.2681684586949390
2004-01-01	-1.3680498822755300
2005-01-01	-1.2022936498659800
2006-01-01	-1.9846866532686500
2007-01-01	-0.7171013025950950
2008-01-01	2.2643257714437300
2009-01-01	3.6124560571258800
2010-01-01	0.8525824422232480