2009

6.2

1986

5.9

2003

5.5

1991

6.4

2004

5.8

1970

7.0

1991

7.3

1990

7.5

2008

6.6

1955

6.8

1998

7.0

2008

5.8

1955

7.3

1937

6.0

2019

0.0

1916

0.0

1916

0.0

1916

5.0

1916

0.0

1994

6.8