1991

7.3

1984

6.5

2008

6.6

1994

6.7

1941

7.4

2004

5.6

1970

7.0

2017

6.8

1916

0.0

1916

0.0

2014

7.3

1992

7.5

1984

9.0

1987

9.0

2009

6.3

2008

5.8

1986

5.9

1998

7.0

2003

5.5

1991

6.4