2017

7.2

2021

6.8

2016

7.4

2017

8.2

2019

8.0

2005

5.7

2003

6.9

2012

6.0

1994

7.5

2013

7.8

2014

6.6

2014

7.9

2012

7.7

1971

6.4

2015

6.9

2018

7.8

2013

6.9

2018

6.2

2007

6.4

2023

7.6