1989

5.9

1992

6.8

2008

7.0

2003

6.0

2008

8.3

2011

7.1

2004

7.9

1997

8.4

2024

7.4

2007

7.5

2007

7.4

2012

6.6

2016

7.1

2017

6.6

2003

8.0

2009

5.8

2005

5.8

2015

7.8

1998

9.0

2023

7.8