1971

6.9

2023

6.1

1990

6.1

1964

7.1

1960

7.3

1989

7.2

1963

6.1

2024

6.9

2010

6.7

1986

6.3

2008

4.5

2022

7.7

1965

7.5

1929

7.5

2023

6.8

1997

5.1

2004

4.7

1988

5.9

1951

7.6