1959

6.1

2002

7.1

1988

6.8

1969

3.0

1965

6.0

2004

6.2

1957

6.0

1960

5.0

1963

4.3

1958

0.0

1955

7.0

1960

6.7

1954

0.0

1958

6.5

1957

6.4

1958

6.7

2007

7.4

2006

3.0

2006

6.7

1980

6.4