2008

6.1

2015

5.8

2007

5.9

1987

6.8

2022

6.4

2008

6.7

2006

5.7

2007

6.1

2008

6.5

2001

5.1

2004

4.2

2008

6.5

2016

5.5

2005

6.2

2022

6.2

1979

6.1

1979

8.0

1973

3.7

2005

6.2

2014

6.5