2017

6.1

1985

6.1

2005

5.4

2014

5.7

1970

6.0

1986

5.8

2011

6.4

2019

6.5

1988

6.2

2019

8.2

2020

6.7

2022

7.0

2003

6.3

2008

6.3

1965

7.1

2010

6.0

2011

6.6

1971

6.8

2017

7.6

2021

6.3