1962

7.9

1958

8.2

1990

7.0

1939

7.9

1999

6.7

1931

7.1

1938

7.5

2023

6.2

2020

5.4

2007

6.1

1984

5.8

2011

7.2

2012

5.7

2017

6.0

2019

6.3

2017

5.7

2006

6.6

1945

7.0

2005

6.3

2014

6.7