1967

6.6

1998

7.5

2004

6.7

2008

5.2

1982

7.6

1996

8.1

2000

8.0

1989

7.8

1965

7.4

1959

8.0

2001

6.7

2006

5.5

2000

7.7

1989

6.4

2024

6.6

1999

8.4

2002

7.1

1971

7.5

2010

7.0

1988

7.9