1968

3.2

1964

6.5

1967

4.8

1975

5.1

1960

8.0

1968

5.2

1969

4.5

1963

5.0

1961

0.0

1962

3.0

1976

7.5

1973

5.9

1977

6.0

1967

7.5

1969

7.3

1974

5.7

1962

4.6

1962

6.6

1970

6.0

1944

4.2