1979

6.4

2009

5.9

2015

5.2

2013

8.0

1994

6.0

2004

5.0

2020

7.2

1956

5.3

2018

10.0

1974

5.5

1956

8.2

2010

5.0

1962

6.0

2011

6.0

1942

0.0

1931

5.0

1930

6.0

2019

10.0

1957

5.5

2023

5.7