2003

5.0

1994

6.2

2009

6.9

2008

6.3

2006

5.8

2007

5.0

2009

5.6

2004

4.5

1983

7.2

2005

3.6

1999

6.8

1999

5.4

2005

7.2

2020

6.9

2023

6.6

1979

5.7

1970

6.8

1995

6.9

1996

6.7

1995

6.9