1984

6.3

1979

6.1

1940

5.6

1994

6.0

1967

7.1

2009

6.2

2008

6.1

1961

6.0

2004

7.0

1960

5.6

1982

5.2

1975

5.7

1979

6.7

1985

4.9

1981

5.4

2018

6.3

2009

4.8

2000

7.2

2020

6.1

2012

0.0