1991

0.0

1967

7.3

1965

6.9

1949

0.0

1964

7.1

1984

5.2

1989

0.0

1976

6.1

1990

0.0

1975

4.5

1970

5.3

1977

7.4

1972

7.5

1968

1.0

1969

7.0

1974

7.4

1968

4.3