1966

7.3

1996

6.8

1992

7.5

1929

7.5

1958

7.6

1984

8.0

1998

7.4

1957

8.5

1966

7.7

2002

7.1

1948

7.9

2006

6.9

2025

9.0

2014

5.9

1996

6.4

1974

7.0

1961

7.2

2005

6.9

1936

0.0

2017

6.7