2009

6.6

2023

5.4

2019

8.1

2017

7.6

2016

7.0

2022

7.4

2018

6.6

2010

8.4

2013

8.0

2015

7.9

2019

7.2

1980

8.2

2004

7.5

2017

6.9

2002

6.0

1994

8.7

2017

7.3

2014

7.9

2019

7.1

2017

8.1