1988

8.0

2004

8.3

2013

7.7

2007

8.6

2024

9.0

1977

7.3

2020

7.5

1995

8.2

1998

6.8

2004

8.1

1991

7.6

2020

8.2

2013

8.2

2013

7.6

2018

7.6

1991

7.4

2005

8.6

1990

8.3

2005

8.1

1993

6.6