Year	Percent Change
1978-01-01	6.81878535227717
1979-01-01	23.11507816154450
1980-01-01	20.37846749393930
1981-01-01	21.97385599067540
1982-01-01	19.19311508676370
1983-01-01	23.25422556605290
1984-01-01	27.92985628303480
1985-01-01	17.42772214187140
1986-01-01	16.00712315477130
1987-01-01	14.16588919017170
1988-01-01	8.50521218210883
1989-01-01	6.77749705511563
1990-01-01	17.82461734356660
1991-01-01	14.24759381708740
1992-01-01	14.00345279075060
1993-01-01	3.37742394858761
1994-01-01	5.45306003826036
1995-01-01	-1.08819227217607
1996-01-01	3.99991959176852
1997-01-01	3.54187252672734
1998-01-01	3.95095285865898
1999-01-01	1.68834630837211
2000-01-01	1.14521235874283
2001-01-01	2.15062033098230
2002-01-01	1.82774053950535
2003-01-01	2.87213082252770
2004-01-01	1.28053394358683
2005-01-01	3.32837498892918
2006-01-01	2.60811918929040
2007-01-01	1.96510978700421
2008-01-01	3.78659144737257
2009-01-01	2.64317280581367
2010-01-01	-1.31272808090962