Year	Percent Change
1981-01-01	12.884581492918200
1982-01-01	10.995752803902600
1983-01-01	12.231679874912000
1984-01-01	9.402817996092410
1985-01-01	7.457661242517950
1986-01-01	11.683513626739400
1987-01-01	7.192390593155000
1988-01-01	2.642836468527540
1989-01-01	3.994631168819500
1990-01-01	8.252641417316580
1991-01-01	10.243828358818500
1992-01-01	9.381620910226840
1993-01-01	5.679946172269070
1994-01-01	0.632714945572516
1995-01-01	0.274640933043641
1996-01-01	5.179834321180040
1997-01-01	4.478736710810790
1998-01-01	4.222044576551460
1999-01-01	4.008389591154380
2000-01-01	5.520871664432660
2001-01-01	4.130339489398930
2002-01-01	3.067048736289160
2003-01-01	1.956649687655070
2004-01-01	1.739000665355160
2005-01-01	1.787063452332400
2006-01-01	2.860088917611020
2007-01-01	3.271454526271150
2008-01-01	5.009881223377430
2009-01-01	1.510585749791210
2010-01-01	-0.694625275263586