2012

3.0

2014

6.5

2004

6.4

1997

5.3

2009

6.0

2008

5.0

2007

5.9

2007

6.7

2017

7.5

2020

6.8

2006

5.5

2006

6.4

2007

4.5

2008

6.4

2004

4.6

2008

7.0

2022

8.0

2008

5.6

0.0

1991

7.8