Year	Percent Change
1971-01-01	7.292426794975780
1972-01-01	9.279892938528580
1973-01-01	9.591526408397150
1974-01-01	9.876029608587260
1975-01-01	5.515106208754870
1976-01-01	2.246142926353200
1977-01-01	2.832714311680450
1978-01-01	4.288606865585960
1979-01-01	5.836576275385200
1980-01-01	9.190145454331550
1981-01-01	6.977854305798210
1982-01-01	5.337242519997270
1983-01-01	0.351050722737670
1984-01-01	1.535164519171920
1985-01-01	0.131290337779756
1986-01-01	2.340412487228050
1987-01-01	1.778288745337100
1988-01-01	3.235710045557820
1989-01-01	2.408173558572690
1990-01-01	6.227445164563390
1991-01-01	7.996851763533130
1992-01-01	7.390720097030190
1993-01-01	8.275107473074960
1994-01-01	4.579588099810890
1995-01-01	6.240706271565940
1996-01-01	4.682466807892310
1997-01-01	0.467594820183485
1998-01-01	-0.499255069971086
1999-01-01	-0.785111595317393
2000-01-01	1.631372881723560
2001-01-01	1.213681296828520
2002-01-01	0.412292003025499
2003-01-01	1.512258540270340
2004-01-01	1.433015667734990
2005-01-01	1.945703598741950
2006-01-01	0.791668322362679
2007-01-01	2.235391416976620
2008-01-01	2.425363939599290
2009-01-01	2.434301285113720
2010-01-01	0.280061589438448