1994

9.2

1996

8.1

2001

9.0

2012

8.0

1983

7.7

1997

7.3

2004

5.5

2005

7.9

1989

7.7

2004

8.2

2000

8.2

1985

8.2

1973

6.8

2006

8.1

1981

8.0

2022

7.0

2002

8.3

1994

6.7

1977

6.5

2005

5.2