1973

7.5

1974

7.6

1938

4.0

1991

6.7

2004

6.5

2016

8.1

1974

6.1

1970

6.5

1971

5.8

1989

6.4

1966

0.0

1978

5.3

1931

6.6

1974

7.5

1982

0.0

2018

0.0

1957

6.6

2020

5.2

2013

6.8

2016

5.6