Year	Percent Change
1971-01-01	12.029795559394500
1972-01-01	5.699017317042430
1973-01-01	9.426883309978360
1974-01-01	5.033824999723120
1975-01-01	11.609178814503500
1976-01-01	7.099029803535020
1977-01-01	8.417255943093000
1978-01-01	6.636416794061520
1979-01-01	-1.202272812217890
1980-01-01	7.574493828591690
1981-01-01	10.892128924282400
1982-01-01	13.376978323778100
1983-01-01	7.895546875085840
1984-01-01	2.900782213796340
1985-01-01	3.468572433510600
1986-01-01	9.972981733897560
1987-01-01	11.242950630907500
1988-01-01	5.256062064393250
1989-01-01	1.369296418101380
1990-01-01	0.631807040734695
1991-01-01	2.327419436972760
1992-01-01	1.749913567061880
1993-01-01	-1.047215407944340
1994-01-01	-1.018543043425690
1995-01-01	1.192151148407810
1996-01-01	0.468315265860660
1997-01-01	0.899920652193979
1998-01-01	5.204970638339910
1999-01-01	4.263660193306610
2000-01-01	3.075038594598080
2001-01-01	2.389330736894780
2002-01-01	2.328285070118220
2003-01-01	-0.357867869131177
2004-01-01	0.323419856764454
2005-01-01	1.276830836333620
2006-01-01	0.407461569231049
2007-01-01	5.388868572212260
2008-01-01	8.213193086731160
2009-01-01	3.711114640178650
2010-01-01	1.823818111375100