1996

5.7

2004

5.4

2006

8.0

2013

5.0

2023

7.0

2020

5.0

1978

9.7

2015

6.5

2007

7.0

2017

10.0

2022

6.0

2012

2.5

2009

8.4

10.0

2010

7.0

1981

8.3

2005

9.0

2024

7.5