2004

2.2

2007

7.3

2016

6.9

2010

6.8

2009

5.3

1989

7.3

2010

6.3

2004

6.0

2010

6.3

2021

6.2

2006

5.5

2003

6.9

1987

4.1

2019

7.7

2012

7.2

2017

6.5

2014

6.2

2017

6.5

2015

7.1

2010

6.6