2009

7.4

1997

4.5

2004

5.7

2007

5.9

2014

7.2

2009

5.3

1997

7.7

2004

2.9

2011

6.0

2004

6.2

2008

5.7

2015

8.3

2012

7.0

1986

6.0

1994

7.2

2004

8.0

1970

6.2

2013

5.6

2018

0.0

2013

4.3

2004

0.0

2005

4.9

1994

10.0

2011

6.0

2002

0.0

2005

3.0