1999

8.0

1993

7.0

2002

0.0

2009

4.0

2000

6.0

2001

0.0

2000

6.0

1999

0.0

1987

4.0

1995

9.0

1981

6.6

1951

6.5

1955

6.2

2005

8.1

1999

7.0

1989

7.5

2000

5.7

2004

7.0

2002

7.7

2010

8.0