1975

3.3

1972

7.0

1980

6.9

1982

7.7

1977

5.9

1973

0.0

1988

6.5

1987

7.3

1984

6.0

1976

2.0

1979

6.2

1987

6.0

1981

10.0

1982

0.0

1983

1.0

1977

6.0

1977

3.7

1970

5.2

1976

1.0

1987

4.7

1989

7.1

1971

8.0

1978

6.0

1990

5.6

1974

0.0

1983

1.5

1966

0.0

1985

0.0

1976

8.1

1981

5.0

1967

0.0