2007

8.5

2010

8.1

1974

7.2

2018

8.2

1986

8.3

2016

7.3

2015

7.8

2019

7.9

2014

7.8

2012

8.6

2005

8.1

2017

6.5

2004

8.4

1999

7.4

2021

7.6

2018

8.5

1973

8.0

1994

7.0

2016

7.3

2017

8.5