2004

10.0

1979

6.5

1950

7.6

1981

6.6

1998

6.0

1972

7.9

1976

6.7

1987

6.8

1989

6.0

1955

6.3

1974

7.5

1958

7.0

1985

6.6

1965

6.9

1990

6.1

1954

7.2

1993

6.6

1970

7.2

1976

6.6

1965

6.8