1969

8.3

2008

8.0

2018

6.0

1980

7.1

2017

6.6

2016

6.6

2010

6.2

2003

6.5

1999

7.7

2006

6.5

2003

7.8

2007

7.2

1992

6.4

2007

6.8

1973

7.5

2003

7.5

2000

7.3

1918

7.3

1994

8.1

2024

7.5