1969

4.5

1970

5.5

1967

6.8

1997

2.4

1976

7.5

2001

6.9

1958

4.2

1962

5.0

1959

4.1

1961

5.4

1960

4.8

1976

6.4

1976

6.5

1968

5.3

1970

5.8

1957

3.5

2001

5.0

1960

7.3

2006

0.0

1958

4.5

1973

6.0

1957

4.0

1972

10.0

1959

6.0

1970

4.4

2000

0.0

1970

5.0

1973

4.5

1958

4.0

1988

3.9

1994

7.5

1997

7.7

1987

5.8

1967

5.3

1975

4.0

1956

5.0

1958

7.0

1975

5.7

2007

4.9