2009

4.8

1992

6.2

2010

4.4

2006

5.5

1968

6.9

2025

6.5

2003

5.7

2001

5.4

2009

7.3

1995

5.0

1993

6.1

2020

6.9

2012

6.0

2008

7.0

2011

7.1

2003

5.1

2011

4.7

2003

5.8

2016

5.9

1989

7.0