Year	Percent Change
1971-01-01	5.921218829529170
1972-01-01	4.909414827647580
1973-01-01	8.240414495163140
1974-01-01	14.026724908289900
1975-01-01	17.365954053656600
1976-01-01	10.266933403765800
1977-01-01	8.922447689088140
1978-01-01	9.521942474391100
1979-01-01	10.372104842437800
1980-01-01	11.854185799193100
1981-01-01	11.756342652966700
1982-01-01	12.200102206510200
1983-01-01	8.481014635103940
1984-01-01	5.881488738692980
1985-01-01	5.572535514817810
1986-01-01	2.245585631374590
1987-01-01	3.173350950040250
1988-01-01	1.363353445314530
1989-01-01	1.491232527822230
1990-01-01	4.341734347177810
1991-01-01	2.521815725278210
1992-01-01	2.589206553548470
1993-01-01	1.884039246488150
1994-01-01	-0.892143349641286
1995-01-01	-0.180683487898939
1996-01-01	0.792582927597991
1997-01-01	-1.091537448621980
1998-01-01	-0.745795143988808
1999-01-01	0.295173855924640
2000-01-01	1.277877637746280
2001-01-01	2.316976876751580
2002-01-01	2.545538278422590
2003-01-01	1.127817929877040
2004-01-01	1.495203433434900
2005-01-01	1.468836255282200
2006-01-01	2.156203070321430
2007-01-01	1.317208164556100
2008-01-01	3.243371281268470
2009-01-01	3.044526873164580
2010-01-01	0.230839322917475