1971

8.0

1992

6.6

2004

7.2

2013

2.0

1997

6.6

1995

6.4

1987

7.8

2012

6.6

1978

6.2

2002

5.8

2005

6.6

1976

7.2

2018

5.8

2017

4.3

2008

0.0

1936

5.6

2006

6.7

1992

7.8

1939

5.0

1994

6.7