2003

6.7

2010

0.0

2015

7.0

1986

5.9

2007

6.0

2012

5.6

2014

5.0

2005

0.0

2018

5.8

1971

6.4

2012

5.0

2010

5.8

2012

5.0

2018

10.0

2001

6.2

2017

6.8