1982

7.6

1973

5.1

1981

5.5

1975

0.0

1980

6.1

1987

6.2

1989

6.6

1983

6.8

1985

7.7

1977

0.0

1988

6.1

1966

7.6

1979

5.1

1984

7.5

1994

4.3

1971

5.8

1966

8.0

1994

7.0

1969

5.8

1980

5.5

1979

7.0

1963

7.2

1965

6.5

1972

5.6

1967

6.2

1967

6.8

1984

6.2

1999

5.3

1976

7.4

1997

7.7

1974

7.3

1999

8.3

1997

7.9

1966

6.6

1973

2.5

1964

7.7