1997

6.1

1984

7.2

1961

6.2

1976

7.0

1999

6.9

1979

7.7

2024

8.0

1943

6.0

2002

7.4

2006

6.5

2005

6.9

1955

7.0

1995

7.2

2003

6.9

2013

3.5

2000

6.8

2001

6.8

2000

6.0

2009

4.9

1982

6.7