1998

9.2

2006

9.3

2017

7.9

2009

8.5

2004

7.0

7.0

2023

9.0

2010

7.5

1997

6.0

2007

6.2

2016

7.7

1981

7.0

2022

8.5

2019

6.8

2008

3.0

2018

4.0

1973

7.6

1980

7.3

1969

7.0