1966

6.6

1969

0.0

1977

7.2

1964

6.8

1972

6.0

1971

4.7

1972

5.1

1966

6.3

1967

6.2

1972

5.7

1971

0.0

1983

7.2

1975

0.0

1965

7.3

1976

6.7

1963

6.3

1964

6.6

1969

6.4

1972

6.9

1975

2.7

1977

4.5

1976

3.5

1969

4.0

1974

6.0

1970

5.8

1971

5.4

1965

6.9