2018

8.2

1999

7.9

2015

8.7

2008

8.9

2013

8.2

2004

4.5

2016

6.8

2017

4.3

2000

4.0

0.0

2014

7.8

2005

1.0

2009

7.5

2017

8.1

2015

7.3

2017

7.6

2002

8.1

2011

4.0