1971

7.4

2011

6.5

2014

7.3

2023

3.0

2012

6.5

2014

6.2

1983

7.0

2020

6.5

2011

6.7

1946

7.7

1997

7.3

2010

7.7

2011

6.6

2000

7.2

2006

6.4

1991

5.1

1966

6.6

1966

6.7

1937

7.1

2013

7.6