Year	Percent Change
1971-01-01	6.82524561157257000
1972-01-01	6.73137061748592000
1973-01-01	3.16305970828760000
1974-01-01	11.42917963480460000
1975-01-01	17.80072821843310000
1976-01-01	16.09179723092420000
1977-01-01	13.56485398400890000
1978-01-01	10.68908187071740000
1979-01-01	5.56183546719396000
1980-01-01	10.38562900686010000
1981-01-01	8.79457097691980000
1982-01-01	3.99718390727376000
1983-01-01	5.81716510836469000
1984-01-01	5.23459579585400000
1985-01-01	6.90831421922296000
1986-01-01	7.14867128119600000
1987-01-01	4.92098281279057000
1988-01-01	6.32648570772113000
1989-01-01	9.89079324725514000
1990-01-01	10.21563642561530000
1991-01-01	6.29696953210352000
1992-01-01	1.17486558975508000
1993-01-01	-2.25759126828208000
1994-01-01	0.54020666741262800
1995-01-01	0.87143830001666100
1996-01-01	0.81599399827904800
1997-01-01	1.81212251779507000
1998-01-01	0.72663959799663000
1999-01-01	-0.13879242850154800
2000-01-01	3.74406594417944000
2001-01-01	5.12019164525910000
2002-01-01	0.70835567052679100
2003-01-01	0.42769433718599300
2004-01-01	-0.91002804303909400
2005-01-01	0.00237809082413602
2006-01-01	-0.09062616111452650
2007-01-01	3.52547310584564000
2008-01-01	1.85878179360080000
2009-01-01	3.73994143392341000
2010-01-01	-0.45694565200586900