1965

7.9

2011

5.2

1940

7.5

1949

7.8

1989

7.4

1987

7.5

1946

6.8

1988

7.6

2025

7.0

1975

7.2

1965

7.7

1989

5.1

1953

7.7

1986

6.5

2012

6.9

2015

5.7

1938

7.5

2008

5.9

1949

7.1

2009

7.3