1984

7.6

1969

4.6

1978

7.1

1979

7.0

1972

5.8

1962

5.7

1969

6.1

1975

7.4

1984

7.5

1961

6.0

1975

4.9

1977

5.9

1975

5.8

1974

7.6

1959

8.5

1988

3.0

1973

4.8