1973

9.3

1977

6.5

1999

8.1

1994

8.2

1989

7.9

2003

8.3

1998

7.5

1977

7.2

1966

6.4

2000

7.9

2023

6.7

2022

5.3

2002

6.0

1967

7.7

2000

8.1

2023

8.1

2020

6.0

2020

8.4

2006

7.5

1987

7.7