2012

8.4

2013

7.7

2005

8.5

2010

8.1

1998

8.2

2012

6.8

2005

8.2

2015

7.2

2004

8.4

2011

8.1

2010

8.0

2014

8.4

1992

7.9

2018

7.8

2004

8.6

2004

7.3

1994

7.0

2015

7.5

2017

8.5

1993

8.4