1973

10.0

2016

8.2

2018

8.2

2018

6.3

2004

7.3

2006

6.5

2013

4.2

2017

5.9

1990

6.5

1985

6.2

2005

0.0

1989

5.0

2016

0.0

2004

6.1

1983

6.2

1929

6.0

1950

8.1

2016

0.0

2015

10.0

2020

10.0