2012

8.5

1985

8.0

1981

5.6

2014

5.5

1970

0.0

1960

4.8

2016

6.0

2016

9.0

2003

8.0

2020

10.0

1983

5.8

2006

7.7

2008

5.0

10.0

2018

6.2

2010

6.4