1996

6.5

2015

0.5

1997

5.4

1981

4.3

2009

5.9

2010

0.0

1994

1.0

2004

6.6

1989

4.9

1995

0.0

1992

5.8

2001

3.7

2007

6.0

2012

5.6

2013

6.0

2006

1.0

1998

6.0

2015

7.1

2005

10.0

2007

3.5

2017

4.4

2010

7.0

1978

5.5

2009

0.0

2018

0.0

1999

6.8

1995

4.6

2015

7.6