2011

6.8

1996

6.0

2017

6.2

2003

6.4

2019

4.0

2010

7.2

2013

5.0

2015

7.0

2006

6.6

1986

0.0

2002

7.7

2005

7.5

1990

9.0

1998

0.0

2005

0.0

2008

0.0

2009

4.0

1999

0.0

2015

7.4

2007

6.8