1975

5.0

2015

8.0

2016

5.9

1931

5.8

2023

7.1

1998

6.1

2022

7.1

1984

6.2

2019

6.3

2017

6.5

2017

7.4

2009

6.6

1976

5.5

2005

5.3

2015

5.3

2010

6.1

1957

7.2

1977

5.1

1959

6.4

1991

5.7