2015

8.4

2000

7.4

2003

5.7

1993

5.5

2012

4.5

2014

8.5

2017

6.0

2018

6.6

2002

5.2

2013

8.4

2018

6.6

2004

5.7

2015

6.4

1984

7.2

2016

6.7

2010

7.0

2003

6.4

2006

7.4

2011

9.5