2011

8.5

2020

7.7

1999

7.5

2010

8.1

2004

8.0

2015

8.2

2014

8.4

2021

7.9

1997

8.3

2005

8.2

1989

8.3

1993

7.9

1999

7.9

2021

8.8

2007

7.9

2024

8.6

2021

8.2

2024

8.0

2017

6.5

2009

7.5