1992

6.8

2016

7.6

2013

7.1

2012

8.4

2018

6.8

2019

7.0

2007

8.1

2010

8.0

2017

6.3

2011

8.1

1993

8.4

2023

7.0

2014

8.0

2005

7.3

2008

5.5

2011

7.1

2017

7.7

1978

7.2

2016

8.0

2005

8.1