1984

9.0

1977

6.3

1975

3.7

1986

6.1

1972

5.4

1979

7.3

1963

7.9

1984

8.0

1988

8.0

1972

4.1

1985

5.7

1951

8.6

1984

6.4

1974

7.0

1996

7.2

1969

6.8

1989

6.7

2001

7.0

1976

0.0

1993

6.1

1970

6.3

1999

2.0

1978

7.4

1995

1.0

1976

0.0

1986

0.0

1996

7.6

1981

5.0

1974

0.0

1988

0.0

1979

7.1

1998

7.9

1972

6.2

1982

7.2

1980

8.1

2002

0.0

1981

5.9

2004

0.0

1997

0.0

1973

7.0

1975

7.7

1985

5.7

1997

6.5