Year	Percent Change
1967-01-01	6.257166162395910
1968-01-01	5.241465734527970
1969-01-01	6.291850419436350
1970-01-01	10.922967753833700
1971-01-01	8.969799832883600
1972-01-01	6.417768098645960
1973-01-01	10.620671708493700
1974-01-01	18.125862354803000
1975-01-01	14.941982378678700
1976-01-01	8.351898686549360
1977-01-01	8.717071081000510
1978-01-01	8.154021048933240
1979-01-01	6.362698951592800
1980-01-01	8.824637792881990
1981-01-01	8.328151229179730
1982-01-01	8.440827520200170
1983-01-01	6.364125213869400
1984-01-01	3.275740872166580
1985-01-01	3.796054373375560
1986-01-01	3.817150937948350
1987-01-01	7.918884108453350
1988-01-01	4.171523523043660
1989-01-01	2.598356060698140
1990-01-01	0.372710627719256
1991-01-01	2.598262161951570
1992-01-01	2.347491505934530
1993-01-01	0.451920420511118
1994-01-01	-1.499395791708700
1995-01-01	1.444320738617450
1996-01-01	2.422637578914130
1997-01-01	1.488705825393730
1998-01-01	3.679087517875500
1999-01-01	1.697804409989110
2000-01-01	0.481589861313962
2001-01-01	3.774671312428000
2002-01-01	3.568207786450820
2003-01-01	2.284426559405100
2004-01-01	1.128287078390070
2005-01-01	2.788953969787970
2006-01-01	2.527110560381000
2007-01-01	4.400212962170410
2008-01-01	4.651195458897650
2009-01-01	3.631633766418050
2010-01-01	0.561825428637528