1974

7.0

1976

5.9

1936

7.4

2010

7.0

1983

6.4

1967

7.3

1961

7.7

1968

7.1

1980

7.1

1985

6.2

1984

6.3

2017

6.9

1990

6.1

1984

7.1

2013

7.7

1966

6.3

1981

6.5

1972

7.5

1981

7.4