1968

6.9

1981

5.0

1989

10.0

1955

4.7

1963

7.7

1964

7.9

1966

6.1

1971

8.1

1956

5.9

1978

0.0

1972

7.8

1957

7.1

1956

7.3

1994

5.5

1961

6.8

1968

6.7

1955

5.8

1956

6.3

1948

0.0

1975

6.5

1959

5.5

1982

7.5

1968

6.7

1954

6.1

1968

5.5

1967

6.7

1975

7.4

1957

6.8

1971

6.9

1984

7.5

1960

6.4

1957

5.6

1977

6.9

1971

6.3

1959

7.1

1976

8.6

1975

7.0

1962

6.0

1952

8.1

1966

8.0

1955

5.4

1951

4.5

1960

0.0

1960

5.4

1971

5.5

1957

5.0

1958

6.2

1965

5.4

1957

4.8

1967

6.8

1977

0.0

1966

7.2

1984

2.5

1974

7.3

1972

6.9

1959

8.5

1967

6.0

1952

3.9

1957

6.4