1979

7.3

2008

6.3

2007

7.2

2016

5.0

2015

6.0

2008

6.6

2005

0.0

2016

0.0

2008

0.0

2015

7.0

1994

10.0

1987

8.0

2013

4.8

2014

6.6

2012

0.0

1994

5.8

2016

6.6

2016

8.0

2006

0.0

2006

6.3