2004

8.2

2001

7.6

2013

7.6

2016

7.8

1993

7.9

2012

7.8

1973

6.8

2023

9.1

2011

6.4

2023

10.0

2015

7.0

1966

8.0

2010

6.7

2023

8.5

2014

8.1

2017

6.8

2019

9.3

2007

6.7

2016

6.0

2006

4.2