Year	Percent Change
1977-01-01	6.862589491259090
1978-01-01	10.406584972759700
1979-01-01	4.620555216788110
1980-01-01	6.485598646435780
1981-01-01	9.183477362362000
1982-01-01	3.907621693719020
1983-01-01	-0.416834199492202
1984-01-01	8.699262885841380
1985-01-01	-2.534085914622790
1986-01-01	4.298628154932260
1987-01-01	1.358425791125520
1988-01-01	2.559094481603860
1989-01-01	6.454616976414240
1990-01-01	3.453913626160280
1991-01-01	2.323550215680260
1992-01-01	4.845607908987300
1993-01-01	1.536009528377380
1994-01-01	0.359804098217838
1995-01-01	0.875557105498338
1996-01-01	1.406951179614040
1997-01-01	2.260491949895630
1998-01-01	1.054103997530570
1999-01-01	0.778052709381036
2000-01-01	0.652305863369758
2001-01-01	1.066643871353410
2002-01-01	0.337302166733144
2003-01-01	-2.167612089848510
2004-01-01	-0.993420103397259
2005-01-01	1.183622210123100
2006-01-01	3.321935456342210
2007-01-01	3.535820500017580
2008-01-01	6.348429516685370
2009-01-01	7.275665969922600
2010-01-01	7.423177114404800