2016

7.5

2021

5.9

2019

8.2

2013

7.2

2023

7.3

2009

6.7

2015

9.1

2011

9.5

1997

7.3

2023

8.8

1989

4.5

2020

8.0

2018

8.0

2004

7.0

2006

7.2

2019

7.0

2010

6.0

1971

6.5

2014

8.9