1955

7.1

1977

6.8

1941

7.0

1950

7.0

2001

7.0

1959

6.9

1940

7.1

2000

6.4

1997

7.5

1973

7.3

2007

6.4

2000

7.3

2004

6.8

1999

5.5

1929

6.5

1936

4.7

2002

6.5

2024

0.0

2017

0.0

1970

7.3