2009

7.2

2019

8.1

2015

7.9

2018

7.6

1996

8.5

1999

7.8

1989

8.3

2006

7.8

2023

7.3

2016

6.9

2003

7.2

2014

8.1

2006

7.8

2012

7.9

2017

7.5

2010

8.5

1986

8.3

2008

6.9

1977

8.2

2020

8.4