1964

7.0

1965

6.8

2008

5.7

1998

6.2

1960

7.1

1955

7.2

2005

8.3

2013

8.0

1965

8.0

2025

6.3

2023

9.4

1923

5.9

2011

6.9

2009

7.3

1991

7.0

2019

7.7

1979

7.0

2023

8.4

2017

6.8

2023

6.0