2004

6.6

2005

5.7

2016

6.4

2011

6.9

2015

6.0

2013

6.6

2016

6.6

2017

6.6

2013

5.9

2019

5.4

2000

7.4

2009

7.1

2018

6.0

2005

7.2

1996

6.3

2019

0.0

1985

5.3

2020

10.0

1987

7.2

2010

6.1