1948

5.6

2009

5.0

2006

6.3

1998

6.8

1965

6.6

2017

6.0

2008

4.0

2000

6.7

2008

5.2

2008

5.3

2009

3.2

2004

4.8

1987

6.6

2001

6.0

2018

8.0

1986

6.5

1961

4.3

1941

6.6

2005

4.6

2000

5.3