Year	Percent Change
1972-01-01	3.676547565079840
1973-01-01	8.299292566202150
1974-01-01	16.414365341845700
1975-01-01	15.294426314354800
1976-01-01	10.070651140328800
1977-01-01	8.368007321596700
1978-01-01	5.461439997132650
1979-01-01	3.337238690058610
1980-01-01	9.637323015347980
1981-01-01	12.260545169110700
1982-01-01	12.682220232178400
1983-01-01	6.783617263578540
1984-01-01	3.565334056801130
1985-01-01	2.434029153321630
1986-01-01	5.725386268853900
1987-01-01	0.277024798368704
1988-01-01	3.167431410728860
1989-01-01	7.861564120520010
1990-01-01	5.671907570811240
1991-01-01	0.101948645858328
1992-01-01	4.676194634825080
1993-01-01	-1.309392807589760
1994-01-01	-0.606148492822558
1995-01-01	7.844825756287270
1996-01-01	1.985232661192190
1997-01-01	0.254455961448572
1998-01-01	-0.441210774792967
1999-01-01	1.469639420434250
2000-01-01	0.606116346063707
2001-01-01	1.593726931820540
2002-01-01	1.786376060521390
2003-01-01	1.622174134305110
2004-01-01	2.902250562623830
2005-01-01	6.507798977785090
2006-01-01	3.113760650670240
2007-01-01	3.589649294749720
2008-01-01	2.154582297505730
2009-01-01	2.500676372251840
2010-01-01	0.645484662113928