2006

5.1

1984

9.2

2007

7.5

2017

7.3

2015

6.6

2014

5.8

2010

6.6

2016

5.6

2004

5.7

2011

7.1

2018

5.9

2013

6.7

2016

7.9

2018

8.0

2005

7.4

2010

6.3

2018

5.3

2017

6.6

2017

7.1

2015

7.1