1996

5.5

2002

6.7

2008

6.8

1976

6.5

1962

5.7

2021

6.2

2020

5.7

1977

7.1

1998

6.2

1985

7.3

2008

6.5

1983

6.0

1937

6.7

2003

5.4

2006

6.7

2007

5.8

1981

6.4

2004

5.8

1993

6.3

2006

6.3