1947

6.4

1984

6.0

2005

6.6

2006

4.3

2003

3.1

2004

6.5

2005

5.8

2009

5.7

1996

4.6

2000

4.5

1988

6.3

2025

0.0

2007

5.8

2008

0.0

2008

4.2

2009

6.7

2009

7.2

2018

5.6

1979

5.7

2014

8.6