1984

7.6

1973

4.4

1972

7.8

1981

5.5

1966

6.7

1967

7.8

1964

7.2

1979

5.7

1987

6.0

1976

7.5

1973

3.5

1964

2.6

1974

4.0

1977

0.0

1980

4.6

1962

6.5

1986

7.2