1996

6.5

2018

0.0

1997

5.4

2003

6.7

2013

6.8

1981

4.4

2013

5.5

2015

7.1

2004

4.9

2015

2.0

2007

0.0

2018

6.6

2006

3.0

2009

6.6

2004

6.1

2010

0.0

1995

5.0

2011

0.0