1960

8.4

1982

7.2

1978

7.6

2022

4.8

1931

7.2

1980

8.2

1935

7.5

2016

7.7

1998

6.0

1984

6.3

1988

6.2

1968

7.6

1958

6.2

1989

6.6

2025

0.0

1949

6.5

0.0

1982

6.9

2002

6.0

2013

4.3