1997

6.6

2002

6.0

2021

8.4

1996

5.4

1991

6.1

1983

6.3

1981

5.5

1994

6.9

1967

5.9

1967

6.1

2011

6.2

2024

7.0

1967

4.4

1979

4.2

1966

7.7

1966

5.6

1977

4.0

2018

5.6

1966

4.3

1973

4.4