1946

6.0

2010

5.9

2003

5.3

1929

9.0

2012

5.4

1995

5.3

1968

6.1

1996

4.9

2009

6.1

1955

4.6

1974

5.2

1999

5.7

1997

6.3

2006

5.6

2005

5.8

1930

6.0

2003

6.0

2008

3.8

1990

0.0

2002

6.1