2006

8.6

2000

8.1

2023

7.5

1990

7.6

1989

8.3

2008

7.7

2006

8.2

1981

8.0

2021

8.0

1996

7.6

2009

8.0

2017

7.8

2016

6.6

2012

7.3

2010

7.8

1995

6.2

2005

8.6

2010

7.0

2015

8.7

2008

7.6