2017

6.0

2008

6.3

2010

7.5

2008

6.5

2007

7.6

2013

3.2

2005

7.6

2013

8.1

2011

8.5

1992

7.1

2004

7.7

1985

0.0

1997

7.5

2019

7.3

2018

8.0

1998

6.8

2001

5.6

2006

5.9

1999

6.6

1994

4.0