2006

5.3

2003

4.1

1980

4.3

1997

6.7

2017

6.8

2006

7.6

1997

6.8

2005

6.5

2018

5.0

1998

7.1

2000

6.2

2016

4.3

2018

7.0

2012

4.2

1985

7.1

2007

6.5

2019

7.3

2006

6.0

2005

4.7

2008

6.7