2004

8.2

2013

8.1

2015

7.1

2018

7.4

2017

7.1

2001

6.7

2007

7.5

2019

6.9

2016

7.3

2003

7.3

2018

7.1

1999

7.4

2017

7.6

2016

7.2

1966

8.0

1993

8.4

2014

7.8

2022

7.0

1995

7.8

2016

6.3