2001

7.8

1996

7.5

2011

7.5

1999

0.0

1992

7.3

1998

8.2

2004

3.5

1989

6.7

2003

6.4

2004

7.9

1994

7.8

1993

7.7

2005

8.1

1995

7.3

1985

6.3

1979

6.8

1986

7.1

2001

6.4

2002

6.2

1985

3.5

1999

5.6

2000

5.5

1997

4.6

1978

6.2

2001

8.1

1989

5.0

1991

5.9

1984

7.2

1978

7.2

2001

6.5

1982

0.0

1998

7.1

1994

7.2

1989

6.3

1988

5.0

1988

6.0

1997

4.7