Year	Percent Change
1971-01-01	13.761240144533400
1972-01-01	12.502981405287800
1973-01-01	15.829142353146600
1974-01-01	24.813394132183600
1975-01-01	23.385139447901800
1976-01-01	13.272940430807700
1977-01-01	6.303636329055690
1978-01-01	4.371208460136050
1979-01-01	9.830852715007040
1980-01-01	15.745601262324700
1981-01-01	10.972158819784200
1982-01-01	8.049603371440960
1983-01-01	8.756914283610790
1984-01-01	10.034592453451900
1985-01-01	7.936887382420110
1986-01-01	7.118002646324990
1987-01-01	12.625785006630100
1988-01-01	9.939848733175230
1989-01-01	10.187963187179800
1990-01-01	10.636583080321300
1991-01-01	3.065148270383140
1992-01-01	-4.743348482038000
1993-01-01	-5.664357389722420
1994-01-01	0.246074403762030
1995-01-01	2.980245123549910
1996-01-01	-0.865156393392630
1997-01-01	0.861208585028586
1998-01-01	5.030481649133160
1999-01-01	6.141735364804860
2000-01-01	7.535082305608100
2001-01-01	7.211396501203480
2002-01-01	4.259773497497010
2003-01-01	2.435583353351200
2004-01-01	3.204405927726900
2005-01-01	4.681324633383540
2006-01-01	4.699428086678090
2007-01-01	3.370555029700720
2008-01-01	4.976825732820140
2009-01-01	5.212303061887160
2010-01-01	3.102617391603320