1963

7.0

1974

7.8

1980

8.4

1978

7.0

2007

5.5

1982

7.7

1983

7.3

1977

6.3

1977

7.0

1988

6.0

2020

8.0

1987

6.3

2009

5.0

2013

6.4

1987

4.0

1985

8.5

1994

0.0

1982

6.0

1977

6.5

1976

6.0

1992

6.0

1972

6.8

1979

8.1

1989

6.3