1996

8.0

2004

6.4

1990

9.0

1975

5.8

1954

6.3

1987

6.3

2007

6.1

2014

3.1

1977

7.3

1995

7.6

2014

6.9

2005

6.3

2002

7.1

2006

7.8

2008

6.0

1928

0.0

1964

0.0

2023

10.0

2005

7.4

2001

4.4