1983

7.8

1961

5.7

1997

7.2

1982

6.9

1977

6.8

1989

6.7

1965

6.4

1983

6.4

1969

0.0

1979

6.8

1967

6.6

1966

7.5

1998

3.7

1972

4.0

1981

6.7

1982

5.3

1990

7.4

1990

6.6

1989

5.7

1987

6.3