1997

8.3

2003

6.9

2024

8.2

2021

7.1

1992

7.8

1982

5.8

1968

8.1

1984

6.9

1997

7.9

2007

5.2

1994

8.7

1990

6.1

1989

8.3

2023

6.3

1990

7.2

2023

7.0

2014

8.0

2022

7.1

2021

7.2

2023

7.1