1970

6.0

1992

8.5

1965

4.6

1970

4.3

1980

6.0

1976

5.5

1963

7.0

1967

2.3

1965

5.2

1966

5.1

1987

7.6

1991

7.5

1966

6.6

1976

5.2

1965

7.9

1951

8.7

1985

6.2

2001

6.8

1954

6.1

1969

6.0

1987

7.7

1981

4.7

1974

5.9

1965

5.8

1960

7.5

1962

6.8

1958

6.1

1965

5.5

1966

5.2

1965

4.0

1967

6.8

1970

7.4

1963

5.8

1972

3.9

2011

9.3

1984

7.8

1959

4.3

1965

0.0

2001

7.5

6.0

1987

8.5