1993

5.5

1931

5.8

1985

6.5

1983

5.8

2012

4.8

2017

6.4

1991

6.3

2013

6.2

2000

7.1

1963

6.2

2016

6.6

2007

9.9

1980

7.0

2012

5.6

2023

6.5

2004

6.1

1990

6.1

1968

6.9

1945

5.5

1963

8.3