1996

8.1

1998

9.0

1984

8.4

1985

7.9

2019

8.0

1998

7.2

1976

7.9

1998

6.8

1979

7.5

2015

8.6

2011

7.6

2017

7.1

2018

8.2

2019

7.8

2013

8.2

2007

9.6

1983

8.0

1988

7.7

2016

8.2

1981

8.1