1975

5.5

1988

7.1

1969

3.5

2001

5.1

2009

7.5

2004

5.5

1976

5.6

2007

4.2

1993

7.7

2002

5.5

1968

7.6

2003

7.8

2006

7.4

2023

7.2

1999

4.7

1965

3.2

2009

7.0

1995

3.8

1993

0.0

1997

0.0