Year	Percent Change
1971-01-01	9.7530123995079200
1972-01-01	7.3949070121351000
1973-01-01	12.6640149309629000
1974-01-01	20.9397729177645000
1975-01-01	24.6867146368690000
1976-01-01	16.0719585488381000
1977-01-01	9.8168545007895400
1978-01-01	4.0535982233012700
1979-01-01	6.8807357488692000
1980-01-01	13.8015579398444000
1981-01-01	11.9459423888362000
1982-01-01	7.5292701904402200
1983-01-01	6.8656366016989000
1984-01-01	7.3582608635736600
1985-01-01	6.2231350457266400
1986-01-01	4.0719158903132900
1987-01-01	5.7486534742359000
1988-01-01	7.6846506111564500
1989-01-01	8.0205001612985000
1990-01-01	6.7585132325922200
1991-01-01	5.0655247803426500
1992-01-01	-0.0879032574439471
1993-01-01	-3.8123863799154400
1994-01-01	-2.4600668177648200
1995-01-01	1.0393448212738300
1996-01-01	0.0393764147638178
1997-01-01	0.6695151138841600
1998-01-01	1.7762102743943100
1999-01-01	2.2889620505042000
2000-01-01	2.7269489249269700
2001-01-01	2.3607367455249700
2002-01-01	2.6622065971876900
2003-01-01	2.7712578698260800
2004-01-01	-0.8814367816938610
2005-01-01	2.4997680969458800
2006-01-01	3.0651512045188200
2007-01-01	0.9490634180590170
2008-01-01	6.6896004415834000
2009-01-01	6.9151618838310400
2010-01-01	1.5725969136902300