1964

6.8

2002

6.8

1983

5.7

2007

4.5

1983

7.1

1988

6.6

1960

8.2

1930

6.1

1961

7.5

2000

6.3

1938

5.5

1938

3.0

1947

6.2

1984

6.3

1938

5.3

2013

0.0

1946

7.0

1955

3.5

2002

4.9

1987

5.5