1982

6.1

1980

7.3

1985

5.1

1975

7.2

1980

6.4

1991

6.4

1989

6.6

1979

6.0

1972

7.8

1977

5.7

1999

7.5

1979

6.7

1973

7.0

1978

0.0

1984

7.3

1985

2.4

1974

6.2

1981

6.7

1975

7.3

1993

0.0

1979

4.9

1977

7.2

1985

5.6

1980

0.0