1978

6.6

1993

6.9

2020

4.2

2002

7.1

2007

6.7

1935

7.3

1940

7.4

1955

6.6

1978

6.8

1967

7.3

1938

6.0

1965

8.5

1987

0.0

2020

0.0

1999

7.6

2005

6.2

1988

7.4

1987

6.6

1974

0.0

1961

5.6