Year	Percent Change
1971-01-01	10.203958086653400
1972-01-01	5.348804927733290
1973-01-01	6.181000269061500
1974-01-01	11.434072716105000
1975-01-01	10.192742843857100
1976-01-01	6.632447185123500
1977-01-01	8.303501004056320
1978-01-01	-1.644563853221760
1979-01-01	4.145110118430400
1980-01-01	2.901054109891190
1981-01-01	5.995041316717400
1982-01-01	6.062769906514660
1983-01-01	-2.193327844433120
1984-01-01	-0.181093277818026
1985-01-01	6.833005679561310
1986-01-01	4.620023464665810
1987-01-01	7.454059220583120
1988-01-01	2.256946833066480
1989-01-01	-6.627052045700760
1990-01-01	0.468520485301188
1991-01-01	-1.999440803332180
1992-01-01	-2.385885583123620
1993-01-01	1.085282445789820
1994-01-01	-1.301964298938730
1995-01-01	-2.097562439450240
1996-01-01	-1.139792659477870
1997-01-01	4.141754240026030
1998-01-01	9.969832976310370
1999-01-01	3.432105958647640
2000-01-01	-1.898775826553950
2001-01-01	2.694242776348440
2002-01-01	2.586180037132600
2003-01-01	-0.400828488307388
2004-01-01	1.489750531720810
2005-01-01	6.692256299738270
2006-01-01	14.827776203286100
2007-01-01	11.944390306991300
2008-01-01	9.082237051863640
2009-01-01	5.266216693351480
2010-01-01	4.287486193287280