1989

8.0

1996

8.1

2009

7.7

2006

7.1

2025

7.4

2002

7.3

1994

6.8

2018

8.5

2021

7.9

2010

8.0

1998

7.5

2021

8.1

2004

7.8

1969

7.8

1985

7.4

2018

8.3

1987

5.5

2009

6.8

1987

7.7

1995

6.4