2007

6.9

1948

7.0

1995

6.5

1997

6.1

1949

7.7

2005

6.2

1971

6.7

1972

6.8

1973

6.8

2005

6.8

2008

6.8

2008

6.4

0.0

1936

0.0

1998

6.3

1988

6.7

2014

5.9

1998

7.2

2002

6.2

1979

7.7