1996

8.0

1988

5.0

1938

5.8

1925

6.8

1957

7.4

1989

6.1

2007

6.7

2004

4.8

1984

6.5

2006

4.9

2005

6.0

1941

3.2

1957

6.0

1935

4.7

1955

7.8

2002

6.9

2008

4.0

2006

5.5

1970

5.6

2017

3.0