Year	Percent Change
1971-01-01	8.4528656156657000
1972-01-01	5.3904067285598000
1973-01-01	6.1815639249756900
1974-01-01	17.2002175178483000
1975-01-01	6.4589879148567900
1976-01-01	15.1227079894804000
1977-01-01	2.1367892249382100
1978-01-01	-0.0297197221742751
1979-01-01	-1.0710391204899300
1980-01-01	2.1426087898481800
1981-01-01	0.4958323805399740
1982-01-01	1.6087281051010500
1983-01-01	1.2501443889238300
1984-01-01	1.5550279813012100
1985-01-01	3.0225818842636800
1986-01-01	1.1041545929296300
1987-01-01	0.6654171773075300
1988-01-01	0.4314524181348470
1989-01-01	2.5293598165146000
1990-01-01	3.4879463418519300
1991-01-01	2.3508389691253000
1992-01-01	4.0388991261077200
1993-01-01	4.1885126867771000
1994-01-01	1.7200503633814200
1995-01-01	-0.1505961836100200
1996-01-01	-0.8410065943504360
1997-01-01	-3.2371638361444300
1998-01-01	-0.7888570952254460
1999-01-01	1.2115522781673900
2000-01-01	-2.6771257108149700
2001-01-01	3.5888657953770600
2002-01-01	1.5040025446258700
2003-01-01	0.1095930454033190
2004-01-01	-1.7534225697529800
2005-01-01	-0.0431196373276199
2006-01-01	1.1037615611277700
2007-01-01	-0.2239157931072250
2008-01-01	3.1863829705058700
2009-01-01	2.9690980572042600
2010-01-01	-1.6271263525663700