1997

5.0

2006

6.1

2003

5.0

2001

5.1

1999

4.2

2002

5.3

1991

3.5

2005

5.6

1967

5.3

1982

6.1

2006

5.2

2006

5.5

2001

2.7

2002

4.9

2014

6.4

1983

5.7

2008

5.2

1987

0.0

2012

5.3

2022

5.0