1986

5.0

1998

5.0

1970

5.0

2006

3.5

2002

8.0

1984

5.9

1993

7.7

2002

0.0

2008

6.9

1981

7.3

2002

9.5

2008

0.0

2012

0.0

2013

0.0

2012

0.0

2013

0.0

2013

9.0

2012

7.5

2000

0.0

2013

3.0