1964

6.5

1991

0.0

1997

7.5

1962

5.4

1973

7.8

1982

3.0

1954

4.9

1959

8.0

1977

4.7

1990

5.3

1963

7.0

1970

7.1

1976

6.2

1979

6.1

1990

6.5

1966

8.0

1978

0.0