1979

8.0

1964

7.9

1977

6.8

1965

7.8

1967

5.0

1967

6.9

1963

6.5

1991

2.0

1973

5.9

1972

6.2

1968

0.0

1966

6.7

1963

7.2

1978

4.1

1993

4.8

1962

6.4

1967

6.4

1975

7.0