2004

5.9

2008

6.5

2013

0.0

2005

6.6

1984

7.1

1990

7.5

2002

5.8

1997

7.5

2001

5.3

2007

6.6

2012

6.6

2004

7.2

1995

10.0

2016

6.8

2005

6.6

2010

7.0

1994

6.6

2004

3.3

2017

6.9

2006

7.8