1977

6.7

2019

6.0

1986

6.1

1993

6.6

2011

6.9

1968

7.4

1975

7.2

2024

6.0

1956

6.9

1972

6.8

1981

5.0

2021

6.5

1967

7.4

1973

5.6

2023

6.2

1983

5.9

1996

5.6

1977

6.6

2020

6.1

1983

5.1