1998

6.2

2009

5.1

2004

4.4

2003

3.4

2008

6.8

2011

5.9

1997

6.5

2007

6.7

2008

5.1

2007

6.6

2024

0.0

1996

7.3

2003

5.1

2001

7.6

2000

6.7

2001

5.6

1984

5.0

2021

0.0

2003

5.8

2013

7.9