2001

7.9

2004

8.0

2005

7.8

2009

7.7

1998

8.3

2001

7.8

2017

6.3

2007

7.3

2020

6.2

2005

0.0

2006

6.6

2025

5.2

1976

7.1

2003

7.0

2021

6.0

2009

0.0

2014

5.1

2014

0.0

2015

6.6

2002

7.3