1983

8.2

1962

8.0

1987

8.1

1938

7.0

1919

6.9

1989

7.8

1985

6.7

1997

7.0

1985

6.9

2001

6.1

1971

6.0

1991

6.2

2017

6.4

1986

6.5

1975

6.3

2000

6.2

2005

5.7

2008

4.8

2008

6.7

1987

7.3