Year	Percent Change
1971-01-01	6.1502157005393600
1972-01-01	8.6918626001151200
1973-01-01	8.8538730456052100
1974-01-01	12.2416531796988000
1975-01-01	20.5369546037473000
1976-01-01	7.4304277934410000
1977-01-01	6.4263369858776100
1978-01-01	7.6432629903627800
1979-01-01	8.2470107788867200
1980-01-01	8.5920260777969000
1981-01-01	10.1080811735019000
1982-01-01	8.8226172309404200
1983-01-01	5.1670689212653800
1984-01-01	6.3291798938636300
1985-01-01	2.8406423576451200
1986-01-01	2.8998138132508400
1987-01-01	2.8743555760500200
1988-01-01	-1.3646706047565800
1989-01-01	1.0446698138194500
1990-01-01	3.0640989758568600
1991-01-01	3.0383183031850300
1992-01-01	3.0156253709229800
1993-01-01	2.3765281780161500
1994-01-01	-3.2049585462332400
1995-01-01	-1.2792065276606400
1996-01-01	0.9686830997575720
1997-01-01	-3.8074364130403100
1998-01-01	-3.5317040445036500
1999-01-01	-2.2890228741346100
2000-01-01	-1.6942907023934600
2001-01-01	0.6077288507882630
2002-01-01	1.7155074779859100
2003-01-01	-1.7543567858279400
2004-01-01	-0.0212848744921591
2005-01-01	-0.9047546999846010
2006-01-01	1.3048259524099300
2007-01-01	1.1787393069646700
2008-01-01	2.6998037321898600
2009-01-01	2.2922264660363300
2010-01-01	0.6789906822463860