Year	Percent Change
1971-01-01	10.959969792767400
1972-01-01	6.722127780445280
1973-01-01	6.129963555340120
1974-01-01	12.924164123430700
1975-01-01	20.414756530643100
1976-01-01	13.097769550821700
1977-01-01	10.465966977621400
1978-01-01	7.909309095588570
1979-01-01	-1.980102865968140
1980-01-01	6.648984888296920
1981-01-01	14.026783187770100
1982-01-01	8.963689518016520
1983-01-01	5.926593278675080
1984-01-01	3.447248542558920
1985-01-01	6.010234757117210
1986-01-01	11.940166966064000
1987-01-01	5.845865178048020
1988-01-01	7.149667136965700
1989-01-01	1.933623919505690
1990-01-01	5.203813368245380
1991-01-01	5.003387337926930
1992-01-01	1.322371313115510
1993-01-01	1.834147297080870
1994-01-01	2.690928094735750
1995-01-01	3.533682654632910
1996-01-01	1.730542867479870
1997-01-01	3.650700329877200
1998-01-01	3.095435658257670
1999-01-01	6.660985519156570
2000-01-01	3.472732554604170
2001-01-01	3.193036441980340
2002-01-01	2.669677664110150
2003-01-01	-3.483397200809860
2004-01-01	-2.581196492202100
2005-01-01	1.373029426167230
2006-01-01	7.696632159317600
2007-01-01	5.300996224178210
2008-01-01	4.676336927141420
2009-01-01	4.595820469830220
2010-01-01	-0.416513625895377