2017

6.0

6.4

2016

7.0

2023

6.8

2014

6.3

1997

6.2

2015

6.4

2014

7.2

2012

6.2

2013

6.9

2023

5.8

2022

6.8

2004

6.5

2018

8.4

1978

7.4

2019

6.3

2023

7.0

2016

6.6

2009

6.7

2000

7.7