1924

6.8

1970

5.0

1960

6.1

1954

6.8

2014

4.7

2017

6.2

2023

3.9

1937

6.6

2004

1.0

2003

7.2

1970

7.1

2001

5.9

1972

4.7

1971

4.4

2007

6.9

1932

5.5

2007

5.8

2008

5.4

2003

5.4

2002

7.4