1996

7.5

2006

8.1

2004

5.4

2014

7.8

1998

7.9

2016

6.8

2015

8.0

2014

7.1

1994

8.4

2012

8.2

2012

8.4

2017

7.5

2015

7.8

2009

8.3

2013

6.6

2023

9.7

2013

8.0

2015

7.5

2016

7.4

2009

8.0