2010

6.2

2012

4.8

2015

5.3

1984

7.1

1988

5.2

2018

8.3

2017

6.7

2011

7.2

2010

5.5

2009

6.5

2012

5.8

2012

6.6

1999

5.2

2019

8.2

2007

6.1

2010

7.5

2018

7.7

2006

6.2

2004

4.9

2008

4.6