1975

7.0

2017

6.2

1990

7.6

2018

7.5

1992

6.8

2014

7.3

2001

7.4

2001

7.2

1983

7.5

2016

7.4

2005

8.3

2005

7.7

2019

7.1

2008

5.8

2020

7.7

2012

7.8

2022

7.2

2016

6.3

1994

7.8

2020

7.3