Year	Percent Change
1971-01-01	1.652962696269380
1972-01-01	1.325972862738620
1973-01-01	0.969208148079897
1974-01-01	16.353381733184200
1975-01-01	20.085547768285400
1976-01-01	8.214298526778570
1977-01-01	6.012260608926450
1978-01-01	7.350814118977650
1979-01-01	8.557446682067300
1980-01-01	13.779684347646100
1981-01-01	12.679481914026700
1982-01-01	13.252290139704200
1983-01-01	-0.355231461947975
1984-01-01	-3.396697896081020
1985-01-01	2.384757511269470
1986-01-01	4.166474741515090
1987-01-01	1.197748756979160
1988-01-01	3.255642940892490
1989-01-01	6.322018813829640
1990-01-01	3.992212461460380
1991-01-01	4.263353464299450
1992-01-01	0.424541756213725
1993-01-01	-2.330974072351530
1994-01-01	-2.122302861266140
1995-01-01	0.952854803683318
1996-01-01	2.206559807432450
1997-01-01	-0.928596921052790
1998-01-01	0.701907926633279
1999-01-01	-0.248721735985950
2000-01-01	-1.277165441325300
2001-01-01	6.237211803365910
2002-01-01	0.737250268061148
2003-01-01	3.755725977173710
2004-01-01	4.017183292252420
2005-01-01	2.423647616425610
2006-01-01	4.370616381242890
2007-01-01	2.186552776749200
2008-01-01	5.035983124518480
2009-01-01	0.173938134903417
2010-01-01	-1.826397731362010