2020

8.4

2017

7.9

2015

7.7

1989

7.7

1985

7.7

2009

8.3

2022

7.7

2014

7.3

2023

9.1

2012

8.1

1978

7.2

1977

7.4

2004

7.1

2002

8.3

2003

7.8

2015

7.7

2011

6.1

1999

7.9

2017

7.6

2022

8.0