2004

8.0

2005

7.0

1997

7.4

0.0

1932

7.5

2000

7.0

1931

8.3

1968

7.1

2005

7.6

1975

7.8

2002

7.2

1983

5.8

2006

6.9

2008

6.6

1976

7.8

1979

7.3

1982

6.9

1985

7.1

1990

5.8

2003

5.8