Year	Percent Change
1971-01-01	8.7925213639371700
1972-01-01	7.5738715803133100
1973-01-01	9.1003948581629000
1974-01-01	9.0028404269826600
1975-01-01	6.7629057542176300
1976-01-01	2.9881141378237900
1977-01-01	2.0785929844334200
1978-01-01	2.1067552668950900
1979-01-01	2.8010337625193500
1980-01-01	6.0309284314297000
1981-01-01	4.7293017682289000
1982-01-01	4.3791306065272300
1983-01-01	1.1048382445555400
1984-01-01	0.9152197592012340
1985-01-01	0.9493259524012060
1986-01-01	1.6008907285322500
1987-01-01	1.5197744218251500
1988-01-01	0.3561426550134900
1989-01-01	0.8545485181677230
1990-01-01	1.2267128618016800
1991-01-01	5.1776747400284700
1992-01-01	6.0244543365852400
1993-01-01	3.5190559340893700
1994-01-01	1.3069015138950200
1995-01-01	0.6465026484116790
1996-01-01	-0.1595191637279550
1997-01-01	-0.5329359119028260
1998-01-01	-0.1013829964255030
1999-01-01	1.4039992452296800
2000-01-01	1.0040624710678200
2001-01-01	0.2748214640784870
2002-01-01	0.4763477339251130
2003-01-01	1.1051582910226900
2004-01-01	0.1096235933155430
2005-01-01	-0.5339672423671150
2006-01-01	-1.7373093637001600
2007-01-01	-0.0781562522430496
2008-01-01	2.9386041221481900
2009-01-01	2.6192752162386100
2010-01-01	-0.4490984706070170