Year	Percent Change
1971-01-01	10.4231500683867000
1972-01-01	6.2382050467191200
1973-01-01	8.8062809907026800
1974-01-01	8.5960048922833200
1975-01-01	11.7900093915304000
1976-01-01	8.6020168267921000
1977-01-01	9.2183972097466700
1978-01-01	6.2676078095708700
1979-01-01	0.0231315219625342
1980-01-01	6.4553996052595300
1981-01-01	11.2072897720279000
1982-01-01	10.6437972485869000
1983-01-01	4.6934090444665800
1984-01-01	2.3511929730611200
1985-01-01	5.0605483948150700
1986-01-01	8.8750136795056800
1987-01-01	8.6684098896971300
1988-01-01	5.1425474394447100
1989-01-01	-0.5442992431880460
1990-01-01	1.2179463217726100
1991-01-01	0.6478759169299810
1992-01-01	0.3147052147622250
1993-01-01	-0.7183129478343800
1994-01-01	-0.3951298024341810
1995-01-01	1.1616909395463800
1996-01-01	1.4568654115620800
1997-01-01	2.6363687308065000
1998-01-01	6.9333967186504900
1999-01-01	4.4769896715427500
2000-01-01	2.5408836874659100
2001-01-01	3.7383457038733500
2002-01-01	3.4268663455752800
2003-01-01	1.5877120191093000
2004-01-01	1.7694831437978600
2005-01-01	3.4360281054802400
2006-01-01	7.2287095731234500
2007-01-01	8.2296858227406000
2008-01-01	7.9168830560002500
2009-01-01	4.7511337792995700
2010-01-01	3.1318054537712600