1985

6.2

1954

8.4

1999

8.4

1985

8.3

2019

8.5

1957

8.5

2004

7.5

1960

8.4

2012

7.2

2004

8.4

1976

8.1

1980

8.4

2009

7.7

2007

7.8

2017

6.8

1994

8.7

1977

8.2

2007

7.3

2014

7.6

1995

7.3