1997

6.5

2016

7.2

2002

6.0

2020

7.0

2008

6.7

2006

5.1

2019

6.6

0.0

2015

6.0

2018

7.4

2006

5.8

2003

6.6

2014

6.0

2005

6.6

2016

6.0

2014

6.1

2012

4.6

1990

4.2

2014

0.0

2016

5.6