Year	Percent Change
1971-01-01	11.7254198819595000
1972-01-01	3.7246028667270600
1973-01-01	16.1548624416666000
1974-01-01	21.5964277313723000
1975-01-01	10.2968924032346000
1976-01-01	8.0167352845089400
1977-01-01	8.3378723099707000
1978-01-01	3.2437703405938200
1979-01-01	0.2897046358614150
1980-01-01	-5.5080683843955700
1981-01-01	4.9782155710285900
1982-01-01	2.9793062726381900
1983-01-01	0.1755197629552990
1984-01-01	1.4804801408967800
1985-01-01	-1.0038236280054300
1986-01-01	-0.2186899634147350
1987-01-01	-3.3721109679625200
1988-01-01	-1.5678499227150000
1989-01-01	0.0433186520596345
1990-01-01	-3.4452435053072400
1991-01-01	-1.3951398562495400
1992-01-01	-1.2244860798828400
1993-01-01	-0.2522346358482770
1994-01-01	-2.7173348017012500
1995-01-01	-3.4931588609901500
1996-01-01	-0.5005700799026810
1997-01-01	-1.5380740698589200
1998-01-01	0.1562904275536320
1999-01-01	-3.5769488861912700
2000-01-01	0.0389335418901024
2001-01-01	-3.9876388567298900
2002-01-01	-4.8666347729232000
2003-01-01	-1.3765837473388200
2004-01-01	-4.5651956931501100
2005-01-01	-1.4894219020090700
2006-01-01	2.8267256985484700
2007-01-01	-2.0520398880821400
2008-01-01	1.1904556603870200
2009-01-01	5.1580036573576600
2010-01-01	-0.1544902388015500