1976

8.5

2022

8.4

2002

8.2

2011

7.3

2007

8.6

2005

8.6

1985

8.5

1987

7.7

1991

7.6

2004

8.3

1977

7.2

2009

8.1

2011

8.1

1995

7.2

1992

8.5

2013

7.7

2016

7.0

2013

8.2

1998

7.0

2019

8.2