1983

4.1

1969

0.0

1977

5.5

1981

4.2

1971

7.1

1972

2.0

1982

6.4

1982

5.4

1974

4.8

1982

2.7

1980

6.3

1972

3.9

1978

6.6

1968

6.3

1979

5.0

1975

6.2

1984

5.6

1975

4.5

1973

5.3

1985

5.8

1979

6.4

1976

7.3

1981

3.8

1981

1.4

1960

6.9

1980

6.0

1973

6.0

1973

4.5

1977

6.6

1969

5.2

1977

3.8

1975

6.0

1964

6.1

1976

3.0

1981

5.7

1961

5.5

1981

5.4

1966

7.3

1973

4.0

1976

6.8

1983

5.2

1990

7.4

1972

6.1

1970

5.5

1979

6.5

1982

4.3

1980

5.5

1972

6.5

1979

4.2

1975

4.0

1983

5.6

1973

6.6

1973

6.4