2004

5.7

2014

7.8

2002

6.1

2012

7.7

2016

6.8

1967

6.9

2009

6.8

2007

7.6

2015

4.6

2006

7.8

2015

7.8

2020

6.8

1998

7.5

2011

5.8

2010

8.0

2002

4.7

2001

6.9

2023

6.5

2008

7.4

2011

6.1