2005

7.7

2012

7.5

2015

7.6

2014

7.3

2015

6.9

2015

7.4

1990

8.1

2004

5.8

2016

6.8

2009

7.7

2011

7.4

2015

8.2

2008

7.7

2016

8.0

2003

7.9

2013

8.3

1983

8.0

2017

7.3

2011

8.2

2024

7.2