Year	Percent Change
1970-01-01	7.745386915437250
1971-01-01	7.955467156923590
1972-01-01	5.725974332080770
1973-01-01	9.216830092182220
1974-01-01	10.288372186392800
1975-01-01	11.918208484897500
1976-01-01	4.227936929741880
1977-01-01	6.079319909657130
1978-01-01	3.311691398883510
1979-01-01	4.834154967284380
1980-01-01	2.488072193728060
1981-01-01	2.779515451833940
1982-01-01	5.367312624708850
1983-01-01	-0.998183383086160
1984-01-01	-2.894056424090710
1985-01-01	2.386502481823430
1986-01-01	3.568896326500420
1987-01-01	-0.212673512635812
1988-01-01	-0.950056106259684
1989-01-01	-0.860752991762836
1990-01-01	1.135072847710040
1991-01-01	3.705484770253810
1992-01-01	4.782645228273660
1993-01-01	3.205875864235050
1994-01-01	-0.460872887408222
1995-01-01	-0.632236477306878
1996-01-01	-1.451198118203880
1997-01-01	-2.725978687184000
1998-01-01	-1.459128550209460
1999-01-01	-0.821700802636796
2000-01-01	0.154684518619366
2001-01-01	4.291193676772940
2002-01-01	2.731086815261500
2003-01-01	-0.425882024454737
2004-01-01	-1.720390107875680
2005-01-01	-3.304068532705760
2006-01-01	-2.303768432733030
2007-01-01	0.074896287370310
2008-01-01	1.961459362371700
2009-01-01	2.916673199593150
2010-01-01	-0.427400871913282