Year	Percent Change
1971-01-01	10.1209341646534000
1972-01-01	7.2797791999138600
1973-01-01	11.4024527020649000
1974-01-01	11.6977573991849000
1975-01-01	12.6607113821045000
1976-01-01	5.0598145185224300
1977-01-01	4.5297797448739200
1978-01-01	8.7720576296263200
1979-01-01	0.3085038406434390
1980-01-01	5.3876582389757200
1981-01-01	7.2811970137859100
1982-01-01	2.1584382004874600
1983-01-01	0.7159350124702390
1984-01-01	4.5761913027422700
1985-01-01	2.6108707515107400
1986-01-01	2.8786584372486100
1987-01-01	2.3386960937100800
1988-01-01	0.3163486614642830
1989-01-01	1.7458002298223900
1990-01-01	2.8325192373708900
1991-01-01	4.1927244343897300
1992-01-01	3.9984621748378400
1993-01-01	1.5210574315046700
1994-01-01	0.6532319277545680
1995-01-01	-2.9028075355757200
1996-01-01	0.0108262914974805
1997-01-01	-0.9778226435063310
1998-01-01	-0.3451914278058370
1999-01-01	0.2969041729295880
2000-01-01	-0.1392999067494830
2001-01-01	0.4630942781261060
2002-01-01	0.4474364095500980
2003-01-01	0.9719677789819840
2004-01-01	-0.6095877624539330
2005-01-01	0.3457555790450270
2006-01-01	0.6292792565075090
2007-01-01	0.6765930555234170
2008-01-01	3.3759991685885200
2009-01-01	4.8183389348967600
2010-01-01	-0.4979610833434250