1986

5.9

1998

7.0

2008

6.6

1955

6.8

2008

5.8

2003

5.5

1991

6.4

1963

7.0

1976

7.0

2009

6.3

1991

7.3

1990

7.5

1955

7.3

1916

0.0

2004

5.6

1994

6.7

1941

7.4

2014

7.3

1984

6.5

1951

7.3