1984

6.4

2014

5.7

2021

6.9

2020

6.8

1965

7.2

1970

6.3

2009

6.0

2004

6.2

1959

7.7

1980

6.4

2017

6.7

1928

7.8

2012

5.3

1980

6.1

2024

6.1

2010

5.9

1955

7.2

1991

8.3

2012

9.3

2019

6.7