1965

5.4

1999

6.8

2004

6.6

2022

5.8

1987

6.8

1997

4.3

2003

6.0

2006

6.4

1994

6.5

2008

6.2

1998

6.3

1962

5.6

1987

3.7

2009

3.6

2007

5.1

1976

6.8

2020

10.0

2009

5.6

1983

6.2

1986

6.0