1996

6.5

2012

8.1

2004

8.4

1994

8.5

1997

8.4

1979

8.2

2023

8.1

2003

8.3

1990

7.0

1987

7.8

1984

8.0

2005

6.1

2015

8.0

2024

7.2

2025

7.1

2001

7.9

1972

8.7

2023

7.7

2017

7.4

2013

8.0