1981

5.3

2006

6.5

1996

6.6

2003

4.5

2009

7.0

2004

5.9

1991

4.2

1984

6.9

2008

5.6

1987

0.0

1989

6.3

2005

3.2

2007

3.5

2014

0.0

1995

0.0

2010

4.3

2002

6.2

2012

6.0

1986

0.0

2010

6.0

2005

7.0

1981

0.0

2002

6.5

2010

4.3

2002

0.0

1987

0.0

1995

0.0

2002

6.8

2003

0.0

2002

8.0

1989

6.0

1971

6.2

1970

6.1

2000

5.0

2001

3.8

1978

5.5

1997

1.0

1998

3.3

2002

6.4

2005

4.6

1999

3.8

1984

0.0

1994

10.0

1993

10.0

1999

0.0