2016

9.0

2005

7.7

2017

6.8

2010

6.8

2007

7.8

1990

7.5

2015

7.6

2019

8.1

2012

6.7

2009

8.2

2018

7.5

2004

7.4

2001

7.9

2016

7.3

1999

6.6

2018

7.2

2011

6.5

1999

8.2

2013

7.3

2014

7.8