1985

7.5

2010

10.0

1983

7.3

2018

7.8

2005

5.2

1992

6.7

2012

8.0

2001

6.4

2015

5.8

1996

8.1

2003

7.5

1983

7.7

2011

4.0

2018

0.0

1996

9.0

2007

8.3

2013

0.0

2005

5.8

2013

10.0

2017

10.0