1971

6.2

1959

5.9

1974

4.8

1973

6.0

1956

0.0

1961

10.0

1958

5.0

1971

1.0

1965

7.0

1970

5.7

1974

2.0

1974

4.2

1964

7.3

1966

7.0

1960

6.2