Year	Percent Change
1970-01-01	11.853998717527000
1971-01-01	15.632394282949600
1972-01-01	17.163247225461600
1973-01-01	10.424639151971600
1974-01-01	10.349313776034400
1975-01-01	14.514348179660100
1976-01-01	8.743835284040250
1977-01-01	20.104462544504500
1978-01-01	16.352109461546100
1979-01-01	12.297124617827100
1980-01-01	7.267527067735220
1981-01-01	9.527928480707240
1982-01-01	2.812574614328880
1983-01-01	-0.279199883069523
1984-01-01	-4.677413273325550
1985-01-01	-0.584522719674494
1986-01-01	0.276341151784293
1987-01-01	-1.381202065929020
1988-01-01	-3.042986751251930
1989-01-01	1.814974903277150
1990-01-01	6.896370922589670
1991-01-01	3.501445914316860
1992-01-01	5.614388877577240
1993-01-01	4.654400589840160
1994-01-01	1.586961849674660
1995-01-01	4.100466870822060
1996-01-01	3.868432650266410
1997-01-01	3.922786210019270
1998-01-01	3.946328403399850
1999-01-01	3.106493376257780
2000-01-01	3.847594929397360
2001-01-01	5.721740218341220
2002-01-01	7.249616035164440
2003-01-01	6.808976567969390
2004-01-01	5.568319431379500
2005-01-01	-0.346007389957582
2006-01-01	1.514098702420850
2007-01-01	-0.442831334600684
2008-01-01	1.766002991155940
2009-01-01	8.322629348843010
2010-01-01	9.566130421924710