2004

7.2

2024

3.5

1990

7.5

1983

7.9

2002

6.7

1959

8.0

1978

8.0

1995

8.4

1957

8.3

2007

7.2

2000

8.0

2006

7.9

2006

7.5

2002

6.4

1982

8.1

1975

7.7

2007

7.2

1984

8.0

1981

7.4

2008

6.7