1997

7.4

2024

8.0

1995

7.3

2009

4.5

1973

7.5

2002

6.0

1989

7.3

2006

6.3

1973

7.9

2007

6.5

2011

6.7

2005

4.2

2007

6.4

2023

6.7

1999

6.1

2003

5.3

1996

7.0

1985

7.5

1968

6.9

1988

6.8