1977

7.2

1986

4.5

1973

7.5

1990

6.0

2016

10.0

1983

4.6

1979

5.0

1975

6.5

1985

7.7

1982

0.0

1974

5.9

1986

6.2

1978

0.0

1977

6.2

1970

7.8

1970

6.8