2013

6.1

2008

5.7

2021

5.7

2017

4.9

2006

5.0

2020

7.0

2003

6.2

2013

6.1

2004

7.7

2019

6.5

1977

6.5

2002

6.2

6.1

1999

6.6

2017

7.7

2012

6.8

2014

6.4

2022

8.3

2018

5.0

2022

6.8