Year	Percent Change
1971-01-01	8.464157194045310
1972-01-01	2.158842917520630
1973-01-01	17.111842132190100
1974-01-01	12.691413983008900
1975-01-01	13.861397905276100
1976-01-01	17.137355397353700
1977-01-01	13.385516065404000
1978-01-01	15.533215918692200
1979-01-01	15.711309029795900
1980-01-01	14.404688092280000
1981-01-01	13.888603995826700
1982-01-01	13.968172704395400
1983-01-01	10.430621971105600
1984-01-01	10.195176052941500
1985-01-01	3.919636638643630
1986-01-01	-0.593432742144964
1987-01-01	2.685248718477960
1988-01-01	0.499831793809098
1989-01-01	3.205448916621920
1990-01-01	1.433366320913980
1991-01-01	2.054962128247370
1992-01-01	2.141203290990170
1993-01-01	7.503836095816160
1994-01-01	1.797805523205680
1995-01-01	-1.357888726561150
1996-01-01	1.850320274170280
1997-01-01	4.318997064676040
1998-01-01	0.259423912643691
1999-01-01	-1.479633689177460
2000-01-01	2.542447632561250
2001-01-01	0.973674605199593
2002-01-01	6.892364042334230
2003-01-01	5.578204886918360
2004-01-01	3.269731937707370
2005-01-01	4.715077131506520
2006-01-01	6.296660545538100
2007-01-01	3.341574786993010
2008-01-01	4.997513170640950
2009-01-01	4.391667277607990
2010-01-01	4.017168402174360