2015

6.7

1993

7.4

2011

8.5

2015

8.0

2013

8.1

2010

8.1

2013

8.5

2006

8.2

2008

8.9

1999

8.7

2017

8.4

2016

8.6

2005

8.3

2011

8.1

1994

8.4

2011

8.3

2019

8.2

2019

8.1

2019

8.0

2009

7.9