2004

7.4

2012

8.4

2023

7.7

2008

6.2

2014

7.9

2008

7.2

2009

6.8

2005

7.1

2025

5.9

1999

7.0

1965

7.2

1993

7.7

1978

6.4

2016

7.3

2023

7.4

2011

8.1

2000

8.0

2020

8.1

2005

6.8

2013

7.1