1978

7.4

1992

7.0

2008

5.1

1984

4.2

2007

6.5

2002

6.2

2022

0.0

2006

5.5

2006

6.4

1995

7.7

1998

7.3

2014

5.1

2005

5.8

2011

8.0

2009

4.4

2015

0.0

2008

4.4

2004

3.3

2017

3.3

2017

0.0