1964

3.7

1959

7.5

1965

6.4

1976

6.7

1960

4.1

2009

5.9

1980

6.4

1967

0.0

1989

6.0

1975

7.4

1975

0.0

1972

7.8

1966

6.4

1960

6.5

1955

6.6

1967

6.5

1959

5.6

1982

7.5

1972

7.6

1968

6.8

1965

6.3

1959

6.0

1957

5.2

1967

6.7

1961

6.0

1971

5.5

1984

7.5

1966

5.8

1979

6.7

1974

6.2

1959

7.2

1960

6.3

1960

6.9

1981

6.7

1987

4.1

1967

5.4

1965

5.2

1983

7.5

1963

7.2

1963

0.0

1965

6.4

1967

6.2

1967

6.5

1989

6.0

1959

5.8

1965

5.0

1973

6.8

1976

6.4

1974

7.3

1967

6.3

1959

8.4

1962

6.5

1975

4.9

1965

7.5

1971

7.1

1974

4.5

1975

7.0