Year	Percent Change
1971-01-01	7.3462601304658200
1972-01-01	8.2121214285139000
1973-01-01	12.3312240746184000
1974-01-01	13.5020060732769000
1975-01-01	29.5494610726924000
1976-01-01	14.5424117196510000
1977-01-01	20.2439548135045000
1978-01-01	11.3661682776286000
1979-01-01	12.7414429974550000
1980-01-01	19.2269686681387000
1981-01-01	21.2130335883780000
1982-01-01	19.7520926534965000
1983-01-01	13.9966196126553000
1984-01-01	9.6525898603444600
1985-01-01	8.8520229221724600
1986-01-01	4.4066412652483500
1987-01-01	3.5305837833235500
1988-01-01	2.8463751075610300
1989-01-01	5.2600658697349200
1990-01-01	7.3768069754227900
1991-01-01	7.7127188559363200
1992-01-01	4.5488429262124800
1993-01-01	-0.9762360236555440
1994-01-01	-3.5541959524481000
1995-01-01	0.3366611108348880
1996-01-01	3.4789211599746500
1997-01-01	1.0829947210980300
1998-01-01	-0.7976366465740440
1999-01-01	3.1672636717800100
2000-01-01	-3.2852758962596500
2001-01-01	1.6493886921040200
2002-01-01	3.8242057048314600
2003-01-01	4.1833694311018500
2004-01-01	-0.0709727664868491
2005-01-01	2.6550595191030100
2006-01-01	1.0194226123551700
2007-01-01	1.6468833907130800
2008-01-01	3.2198464160254300
2009-01-01	5.6440555990168300
2010-01-01	-1.5001110465860900