1996

6.5

2002

6.3

1997

5.4

2010

0.0

2006

0.0

1981

4.6

2008

5.9

2004

6.6

2004

0.0

2013

6.0

2013

6.3

1999

0.0

2015

7.3

2004

4.5

2014

5.8

2012

5.2

1996

1.0

2003

6.0

2004

6.1

2018

7.8

1995

4.3

2004

0.0

2006

7.0

1992

3.4

2003

0.0