2006

9.3

2023

9.9

2001

7.8

2017

7.1

2016

6.9

2017

7.2

2015

8.2

2018

9.6

2009

7.5

2011

7.6

2012

7.3

2015

6.8

2008

7.6

2017

6.6

2011

7.5

2003

7.6

2018

7.9

2010

8.1

1990

7.4

1995

7.8