1967

6.6

2014

6.9

2004

7.3

2016

6.7

2017

6.2

1981

5.1

2002

7.5

2015

6.0

2010

8.3

2016

6.3

2014

5.2

2021

7.4

1972

6.4

2019

6.0

2016

6.2

2014

6.4

2015

7.1

2012

7.8

2011

7.2

2022

5.5