1985

4.0

1986

5.0

1993

6.1

1984

6.1

1981

5.7

1982

5.7

1998

6.0

1979

6.1

1988

4.4

1981

4.5

1982

0.0

1992

5.8

1992

4.1

1983

4.0

1980

6.1

1992

1.2

1990

6.3

1986

7.5

2004

7.5

1992

6.5

1981

6.2

1997

6.8