1999

8.4

1994

8.7

1998

8.1

1958

8.2

1982

7.9

2016

7.9

2018

8.2

1994

8.5

2014

8.5

1994

8.5

2003

8.0

2017

7.6

1971

8.2

2017

6.7

2018

7.5

1979

8.2

2018

7.5

1957

8.5

2018

6.9

1993

7.6