1980

2.0

1984

0.0

1963

0.0

1974

0.0

1964

0.0

1970

0.0

1975

0.0

1968

0.0

1974

0.0

1977

0.0

1972

0.0

1977

0.0

1961

6.3

1976

8.0

1979

6.2