2006

6.0

2004

6.7

1998

6.6

1973

6.8

1961

6.8

1994

5.7

1974

6.4

2001

5.3

1993

6.4

1939

7.1

1989

6.2

1962

5.0

2018

5.9

2011

5.8

1974

5.3

1952

6.7

1948

6.7

2014

5.8

2023

6.4

1961

6.9