2017

8.5

2008

7.2

2021

7.1

2012

7.3

2017

6.0

1970

6.2

1982

5.9

2017

5.9

1998

7.4

2016

7.4

2011

7.4

2014

6.5

2010

7.8

2019

8.7

2003

6.9

1993

6.1

2001

7.4

2004

7.3

2018

5.8

2003

7.2