1960

8.4

1987

7.1

2004

7.4

1968

7.3

2004

6.6

1995

6.4

1938

5.3

1986

7.0

1931

0.0

1999

6.1

2004

6.1

1986

7.6

1995

8.4

1992

6.9

1958

8.2

2002

5.5

1971

6.7

2020

0.0

1998

6.8

1997

6.1