Year	Percent Change
1971-01-01	7.70754980237514000
1972-01-01	3.80535450084055000
1973-01-01	1.87653269970036000
1974-01-01	8.46375217902015000
1975-01-01	23.39197816156790000
1976-01-01	13.24067625857400000
1977-01-01	12.18173584933710000
1978-01-01	10.06053311336950000
1979-01-01	3.01517794458648000
1980-01-01	8.14047742187710000
1981-01-01	8.54312709474887000
1982-01-01	3.71201875112114000
1983-01-01	7.54280478887737000
1984-01-01	8.08121014016807000
1985-01-01	9.24470298802336000
1986-01-01	4.28133396166952000
1987-01-01	3.49735755127828000
1988-01-01	3.92643334036333000
1989-01-01	9.32575231053972000
1990-01-01	5.10276442572367000
1991-01-01	4.85971005315603000
1992-01-01	-0.74634389247096600
1993-01-01	-0.04265319317181990
1994-01-01	-0.05334953515377640
1995-01-01	-0.19052191355132100
1996-01-01	-0.28867640795910700
1997-01-01	-0.25596324881035200
1998-01-01	-0.47507155674630500
1999-01-01	-0.14143885449407200
2000-01-01	0.46411164679450200
2001-01-01	0.00663785367776341
2002-01-01	-0.02120493245256920
2003-01-01	-0.57653436513875900
2004-01-01	-1.30608843334961000
2005-01-01	-1.01586585291935000
2006-01-01	-0.45566401321385200
2007-01-01	1.10013153908889000
2008-01-01	0.52536083086657500
2009-01-01	1.03168473246284000
2010-01-01	0.32044080735350200