2009

6.5

2002

5.8

2011

7.4

2013

5.9

2008

6.3

2014

8.0

2019

8.1

2017

7.4

2005

7.1

2013

7.2

2014

7.8

2016

7.5

2017

7.6

2018

6.6

1994

8.5

2011

6.7

1999

8.2

2012

7.8

2010

8.4

2016

7.6