2005

6.7

2006

7.3

2013

9.0

1976

6.8

1996

7.8

2024

7.9

2011

7.7

2004

6.2

2012

4.8

2020

0.0

2017

0.0

2016

0.0

2017

0.0

2010

3.3

2007

6.2

2011

6.5

2012

6.8

1997

8.1

2003

6.7

1987

7.7