1996

7.6

2006

7.6

2001

6.4

2005

4.6

1996

6.5

2007

6.3

1999

7.5

2016

5.3

2004

6.6

1980

4.8

2013

6.6

2023

0.0

1982

6.7

2003

7.4

2006

6.0

2013

0.0

2007

6.0

2007

5.3

2003

7.0

2008

7.2