1987

8.1

1978

6.3

1971

6.1

1980

6.1

1977

4.7

1980

0.0

1983

6.1

1982

2.0

1965

6.4

1983

7.1

1974

4.5

1961

7.7

1973

5.8

1973

6.3

1975

4.9

1973

5.5

1971

6.8

1977

6.1

1972

5.6

1971

7.3

1973

0.0