1982

7.6

1973

5.2

1981

5.5

1975

0.0

1980

6.1

1987

6.3

1989

6.6

1983

7.1

1985

7.7

1988

6.1

1966

7.6

1979

5.2

1984

7.5

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

5.7

1967

6.8

1984

6.3

1999

5.4

1976

7.4

1974

7.2

1999

8.3

1997

7.9

1973

2.5

1964

7.7