4.0

1954

7.5

2014

7.0

2017

7.2

2009

6.3

2016

6.4

2006

8.3

2010

8.2

2008

10.0

1984

8.5

1988

7.6

1946

5.0

2005

9.2

1976

7.9

2008

8.7

2004

4.4

1972

7.6

2020

6.0

2005

8.9

2022

8.6