2001

6.5

2014

8.5

2018

7.5

2020

8.1

2015

7.5

2012

8.2

2009

7.6

2009

7.7

2019

8.0

1994

8.5

2018

8.2

2019

8.1

1982

7.9

2017

6.7

2018

6.8

2019

7.7

2003

7.8

2016

7.3

2002

7.1

1998

8.1