2007

8.5

2006

8.0

2003

8.2

2001

7.2

1988

8.1

2012

7.5

2019

6.7

2013

8.1

2015

7.7

1997

7.3

2015

7.4

2014

6.9

2010

7.7

2010

8.0

2024

7.9

2016

6.7

1990

7.1

2018

8.0

2015

7.9

1975

6.9