1962

8.2

2007

4.9

1967

7.5

1957

6.3

1985

3.8

2014

6.4

1971

6.7

2005

6.2

2009

6.9

2011

6.0

1976

8.2

2014

5.9

1994

5.0

2014

5.9

1989

0.0

1977

3.0

2009

5.0

2025

0.0

1927

7.5

1928

7.2