2007

6.3

2004

7.3

2013

6.0

2003

6.6

1980

7.2

1998

6.9

2020

7.0

2014

5.9

1998

7.4

1981

8.0

2017

9.0

2016

0.0

1997

0.0

2000

6.8

1989

7.1

2008

7.0

2017

6.0

2004

6.0

2015

4.0

2001

5.6