2007

5.7

1963

7.0

1954

5.0

1986

6.1

1997

5.9

2005

6.2

1996

5.4

1998

7.1

2006

4.9

2003

6.8

1988

6.6

2006

5.3

2008

0.0

1950

6.1

2003

8.1

2001

5.8

2002

5.3

2002

6.6

1984

6.8

1987

6.9