2009

4.0

2013

6.0

2017

4.4

2016

0.5

1987

6.2

1981

4.8

1974

7.0

1996

4.0

1940

6.5

1999

6.4

1998

6.0

2008

5.0

1967

6.8

1984

6.0

1936

3.6

1990

4.4

1993

7.1

2003

0.0

2008

5.7